synergist (n.) Look up synergist at Dictionary.com
1650s, in theology, one who holds the doctrine of synergism (q.v.); from 1876 in medicine. For ending, see -ist.
synergistic (adj.) Look up synergistic at Dictionary.com
1818 in theology; 1876 in medicine, from synergist + -ic. General sense of "cooperative" is from 1965. Related: Synergistical (1650s); synergistically.
synergize (v.) Look up synergize at Dictionary.com
1881; see synergy + -ize. Related: Synergized; synergizing.
synergy (n.) Look up synergy at Dictionary.com
1650s, "cooperation," from Modern Latin synergia, from Greek synergia "joint work, a working together, cooperation; assistance, help," from synergos "working together," related to synergein "work together, help another in work," from syn- "together" (see syn-) + ergon "work" (see organ). Meaning "combined activities of a group" is from 1847; sense of "advanced effectiveness as a result of cooperation" is from 1957.
synod (n.) Look up synod at Dictionary.com
late 14c., "ecclesiastical council," from Late Latin synodus, from Greek synodos "assembly, meeting; a coming together, conjunction of planets," from syn- "together" (see syn-) + hodos "a going, a way" (see cede). Earlier in English as sinoth (early 12c.). Used by Presbyterians for "assembly of ministers and other elders" from 1593 to c.1920, when replaced by General Council.
synodal (adj.) Look up synodal at Dictionary.com
mid-15c., from Late Latin synodalis, from synodus (see synod).
synodic (adj.) Look up synodic at Dictionary.com
1630s, from Late Latin synodicus, from Greek synodikos, from synodos (see synod). Related: Synodical (1560s).
synonym (n.) Look up synonym at Dictionary.com
"word having the same sense as another," early 15c. (but usually in plural form before 18c., or, if singular, as synonyma), from Old French synonyme (12c.) and directly from Late Latin synonymum, from Greek synonymon "word having the same sense as another," noun use of neuter of synonymos "having the same name as, synonymous," from syn- "together, same" (see syn-) + onyma, Aeolic dialectal form of onoma "name" (see name (n.)).
synonymity (n.) Look up synonymity at Dictionary.com
1790, from synonym + -ity.
synonymous (adj.) Look up synonymous at Dictionary.com
c.1600, of words, "denoting the same idea," from Medieval Latin synonymus, from Greek synonymos, from synonymon (see synonym). Related: Synonymously.
synonymy (n.) Look up synonymy at Dictionary.com
1650s, "use of synonyms;" 1794, "quality of being synonymous," from French synonymie and directly from Late Latin synonymia, from Greek synonymos (see synonymous).
synopsis (n.) Look up synopsis at Dictionary.com
1610s, "a general view, an outline," from Late Latin synopsis "a synopsis," from Greek synopsis "a general view," literally "a seeing altogether, a seeing all at once," from syn- "together" (see syn-) + opsis "sight, appearance," from PIE *okw- "to see" (see eye (n.)).
synoptic (adj.) Look up synoptic at Dictionary.com
1763, "pertaining to synopsis," from Modern Latin synopticus, from Late Latin synopsis (see synopsis). Greek synoptikos meant "taking a general or comprehensive view," and the sense "affording a general view" in English emerged by mid-19c. Specifically of the first three Gospels from 1841, on notion of "giving an account of events from the same point of view." Related Synoptical (1660s).
synovial (adj.) Look up synovial at Dictionary.com
1756, "pertaining to the synovia," albuminous fluid secreted by certain glands, from Modern Latin sinovia (16c.), probably coined by Paracelsus and apparently an invented word. With -al (1).
syntactic (adj.) Look up syntactic at Dictionary.com
1771, from Modern Latin syntacticus, from Greek syntaktikos "a joining together, a joining in order," from syntassein "put in order" (see syntax).
syntactical (adj.) Look up syntactical at Dictionary.com
1570s; from Latin stem of syntax + -ical. Related: Syntactically.
syntagmatic (adj.) Look up syntagmatic at Dictionary.com
1937, from French syntagmatique (de Saussure), from Greek syntagma "that which is put together in order," from syntassein (see syntax).
syntax (n.) Look up syntax at Dictionary.com
c.1600, from French syntaxe (16c.) and directly from Late Latin syntaxis, from Greek syntaxis "a putting together or in order, arrangement, a grammatical construction," from stem of syntassein "put in order," from syn- "together" (see syn-) + tassein "arrange" (see tactics).
synthesis (n.) Look up synthesis at Dictionary.com
1610s, "deductive reasoning," from Latin synthesis "collection, set, suit of clothes, composition (of a medication)," from Greek synthesis "composition, a putting together," from syntithenai "put together, combine," from syn- "together" (see syn-) + tithenai "put, place" (see theme). From 1733 as "a combination of parts into a whole." Earlier borrowed in Middle English as sintecis (mid-15c.). Plural syntheses.
synthesise (v.) Look up synthesise at Dictionary.com
chiefly British English spelling of synthesize. For suffix, see -ize. Related: Synthesised; synthesising.
synthesize (v.) Look up synthesize at Dictionary.com
"combine or bring together" (two or more things), 1825, from synthesis + -ize. A correct formation would be *synthetize. Related: Synthesized; synthesizing.
synthesizer (v.) Look up synthesizer at Dictionary.com
1869, agent noun from synthesize. As a type of instrument for generating musical or vocal sounds from 1909; the electronic version is from 1950s.
synthetic (adj.) Look up synthetic at Dictionary.com
1690s, as a term in logic, "deductive," from French synthétique (17c.) and directly from Modern Latin syntheticus, from Greek synthetikos "skilled in putting together, constructive," from synthetos "put together, constructed, compounded," past participle of syntithenai "to put together" (see synthesis). From 1874 in reference to products or materials made artificially by chemical synthesis; hence "artificial" (1930). As a noun, "synthetic material," from 1934. Related: Synthetical (1620s in logic).
syphilis (n.) Look up syphilis at Dictionary.com
infectious venereal disease, 1718, Modern Latin, originally from the title of a poem, "Syphilis, sive Morbus Gallicus" "Syphilis, or the French Disease," published 1530, by Veronese doctor Girolamo Fracastoro (1483-1553), which tells the tale of the shepherd Syphilus, supposed to be the first sufferer from the disease. Fracastoro first used the word as a generic term for the disease in his 1546 treatise "De Contagione." Why he chose the name is unknown; it may be intended as Latin for "Pig-lover," though there was also a Sipylus, a son of Niobe, in Ovid.
syphilitic (adj.) Look up syphilitic at Dictionary.com
1786, from Modern Latin syphiliticus, from syphilis (see syphilis). As a noun from 1881.
Syracuse Look up Syracuse at Dictionary.com
city in Sicily, founded as a Corinthian colony, and with a name traceable to 8c. B.C.E., from a pre-Hellenic word, perhaps Phoenician serah "to feel ill," in reference to its location near a swamp. The city in New York, U.S., was named 1825 for the classical city.
Syria Look up Syria at Dictionary.com
from Latin Syria, from Greek Syria, from Syrioi "the Syrians," a name given originally to the Assyrians (Herodotus vii.63), a shortened form of Assyrioi "Assyrians" (see Assyria). Related: Syrian.
Syriac (adj.) Look up Syriac at Dictionary.com
c.1600, from Latin syraicus, from Greek syraikos "Syrian, of or pertaining to Syria," (see Syria). As the name of an ancient Semitic language, from 1610s.
syringe (n.) Look up syringe at Dictionary.com
"narrow tube for injecting a stream of liquid," early 15c. (earlier suringa, late 14c.), from Late Latin syringa, from Greek syringa, accusative of syrinx "tube, hole, channel, shepherd's pipe," related to syrizein "to pipe, whistle, hiss," from PIE root *swer- (see susurration). Originally a catheter for irrigating wounds; the application to hypodermic needles is from 1884. Related: Syringeal.
syrinx (n.) Look up syrinx at Dictionary.com
tubular instrument, c.1600, the thing itself known from 14c. in English, from Late Latin syrinx, from Greek syrinx "shepherd's pipe" (see syringe). Used of vocal organs of birds from 1872.
syrup (n.) Look up syrup at Dictionary.com
late 14c., "thick, sweet liquid," from Old French sirop "sugared drink" (13c.), and perhaps from Italian siroppo, both from Arabic sharab "beverage, wine," literally "something drunk," from verb shariba "he drank" (compare sherbet). Spanish jarabe, jarope, Old Provençal eissarop are from Arabic; Italian sciroppo is via Medieval Latin sirupus. In English, formerly also sirup, sirop.
syrupy (adj.) Look up syrupy at Dictionary.com
1707, from syrup + -y. Related: Syrupiness.
systaltic (adj.) Look up systaltic at Dictionary.com
"alternately contracting and dilating," 1670s, from Late Latin systalticus, from Greek systaltikos "drawing together," from stem of systellein, related to systole (see systole).
system (n.) Look up system at Dictionary.com
1610s, "the whole creation, the universe," from Late Latin systema "an arrangement, system," from Greek systema "organized whole, a whole compounded of parts," from stem of synistanai "to place together, organize, form in order," from syn- "together" (see syn-) + root of histanai "cause to stand" from PIE root *sta- "to stand" (see stet).

Meaning "set of correlated principles, facts, ideas, etc." first recorded 1630s. Meaning "animal body as an organized whole, sum of the vital processes in an organism" is recorded from 1680s; hence figurative phrase to get (something) out of one's system (1900). Computer sense of "group of related programs" is recorded from 1963. All systems go (1962) is from U.S. space program. The system "prevailing social order" is from 1806.
systematic (adj.) Look up systematic at Dictionary.com
1670s, "pertaining to a system," from French systématique or directly from Late Latin systematicus, from Greek systematikos "combined in a whole," from systema (genitive systematos); see system. From 1789 as "methodical," often in a bad sense, "ruthlessly methodical." Related: Systematical (1660s); systematically.
systematise (v.) Look up systematise at Dictionary.com
chiefly British English spelling of systematize; for suffix, see -ize. Related: Systematised; systematising; systematisation.
systematization (n.) Look up systematization at Dictionary.com
1811, noun of action from systematize.
systematize (v.) Look up systematize at Dictionary.com
"make into a system," 1764, from French systématiser or a native formation from system (Greek stem systemat-) + -ize. Related: Systematized; systematizing.
systemic (adj.) Look up systemic at Dictionary.com
1803, irregularly formed from system + -ic; used in medicine and biology for differentiation of meaning from systematic. Related: Systemically.
systole (n.) Look up systole at Dictionary.com
"periodic contraction of the heart and arteries," 1570s, from Greek systole "a drawing together, contraction," from syn- "together" (see syn-) + stem related to stellein "to bring together, draw in; to put, set, place" (see diastole).
systolic (adj.) Look up systolic at Dictionary.com
1690s, from Modern Latin systolicus, from Greek systole "a drawing together, contraction" (see systole).
syzygy (n.) Look up syzygy at Dictionary.com
"conjunction or opposition of a heavenly body with the sun," 1650s, from Late Latin syzygia, from Greek syzygia "yoke of animals, pair, union of two, conjunction," from syzygein "to yoke together," from assimilated form of syn- "together" (see syn-) + zygon "yoke" (see jugular). Related: Syzygial; Syzygiacal; Syzygetic.
Szechwan Look up Szechwan at Dictionary.com
also Szechuan, place name, said to mean "four rivers," from Chinese si "four" + chuan "river."