convanescev.
/kɒnvəˈnɛs/ Mathematics.
To disappear by the running together of two summits: said of the edge of a polyhedron.
ΚΠ
1851 E. P. Kirkman in Philos. Trans. (Royal Soc.) 147 187 If AB convanesces by the union of its summits, P becomes P′, losing the faces A and B.
This entry has not yet been fully updated (first published 1893; most recently modified version published online June 2018).
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