scalene (adj.) Look up scalene at Dictionary.com
"having unequal sides," 1680s, from Late Latin scalenus, from Greek skalenos "uneven, unequal, rough," from skallein "chop, hoe," related to skelos "leg" (literally "bending") and skolios "crooked," from PIE *(s)kel- "crooked, curved, bent; perverted" (cf. Greek kole "thigh bone," Old Church Slavonic koleno "knee," Lithuanian kelys "knee").