-chromecomb. form
Primary stress is retained by the usual stressed syllable of the preceding element and vowels may be reduced accordingly; see e.g.
autochrome n. and adj.Origin: Either (i) a borrowing from Latin. Or (ii) a borrowing from Greek. Etymons: Latin -chromos; Greek -χρωμος.
Etymology: < post-classical Latin -chromos (in e.g. achromos : see achromic adj.) or its etymon Hellenistic Greek -χρωμος (in e.g. δίχρωμος two-coloured: see dichromic adj.) < ancient Greek χρῶμα colour (see chrome n.). Compare French -chrome (in e.g. monochrome monochrome n., polychrome polychrome adj.), German -chrom (forming nouns, e.g. Polychrom polychrome n., Rhodochrom (see rhodochrome n. at rhodo- comb. form ), and forming adjectives, e.g. cytochrom cytochrome adj.). With use forming adjectives compare -chromic comb. form. Compare also -chromy comb. form and -chromism comb. form.Attested earliest in an isolated borrowing < Italian (see monochrome n.). Formations within English are found from at least the beginning of the 19th cent. (e.g. polychrome n., metrochrome n.); adjective formations without a corresponding earlier noun are found from at least the middle of the 19th cent. (e.g. lithochrome adj.).
This is a new entry (OED Third Edition, November 2010; most recently modified version published online December 2018).