Longitude
来自Big Physics
late Middle English (also denoting length and tallness): from Latin longitudo, from longus ‘long’.
wiktionary
From Middle English, borrowed from Old French longitude, from Latin longitūdō(“length, a measured length”), from longus(“long”).
etymonline
longitude (n.)
late 14c., "length; height," also "astronomical or geographic longitude," a measure of the east-west distance of the dome of the sky or the surface of the earth, from Latin longitudo "length, long duration," from longus "long" (see long (adj.)). For explanation of the geographical sense, see latitude.