From Greek 'katalogos' (a list), from 'kata-' (down) + 'legein' (to count) — same root as 'logic' and 'legend.'
A complete list of items, typically arranged systematically; a publication containing details of items for sale.
From Old French 'catalogue,' from Late Latin 'catalogus' (a list, register), from Greek 'katalogos' (κατάλογος, a list, a register, an enrollment, a catalogue), from 'kata-' (κατά, down, down through, completely) + 'legein' (λέγειν, to say, to count, to gather, to pick out), from PIE *leǵ- (to collect, to gather, to pick). The original sense was a 'counting down' — a complete enumeration, going through items one by one from top to bottom. Greek 'legein' is one of the most productive roots in English, yielding 'logic' (the art of reasoning