"a list of separate items, an itemized enumeration," usually in order and with some description, early 15c., cathaloge, from Old French catalogue "list, index" (14c.), and directly from Late Latin catalogus, from Greek katalogos "a list, register, enrollment" (such as the katalogos neon, the "catalogue of ships" in the "Iliad"), from katalegein "to reckon up, tell at length," from kata "down; completely" (see cata-) + legein "to say, count," from PIE root *leg- (1) "to collect, gather," with derivatives meaning "to speak (to 'pick out words')."
1590s, "to make a catalogue;" see catalogue (n.). From 1630s as "to enter into a catalogue." Related: Catalogued; cataloguer; cataloguing.