-merecomb. form
Primary stress is retained by the usual stressed syllable of the preceding element and vowels may be reduced accordingly; see e.g.
centromere n.Origin: A borrowing from Greek. Etymons: Greek -μερής, μέρος.
Etymology: < ancient Greek -μερής (in e.g. διμερής bipartite (see dimerous adj.), τριμερής tripartite (see trimerous adj.), πολυμερής manifold (see polymerous adj.1)), combining form of μέρος part (see mero- comb. form1). Compare French -mère (1817 in pentamère : see pentamerous adj.), and German -mer (mid 19th cent. in Metamer metamere n.).English formations are found from the mid 19th cent. in such compounds as osteomere n. at osteo- comb. form and neuromere n. and were numerous until the first half of the 20th cent.
This entry has been updated (OED Third Edition, September 2001; most recently modified version published online December 2018).