polycotyledonyn.
/ˌpɒlɪˌkɒtᵻˈliːdn̩i/, U.S. /ˌpɑliˌkɑdəˈlidəni/, /ˌpɑliˌkɑdəˈlidn̩i/ Botany.
The condition of being polycotyledonous, or of having more than the normal number of cotyledons.
ΚΠ
1874 R. Brown Man. Bot. Gloss. 611/1 Polycotyledony, accidental increase in the number of the cotyledons.
1907 New Phytologist 6 83 The seedlings of the Coniferæ proper are in many cases complicated by the phenomenon of polycotyledony.
1937 Science 19 Mar. 288/2 The generalized embryo of the Araucarian is little different from that of the far older cycadeoids, however primitive polycotyledony and polyembryony may be.
1992 Plant Cell Rep. 11 279 There appears to be a correlation between the amount of surface roughness of the developing embryo and the extent to which polycotyledony occurs.
This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).
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n.1874