- a combining form meaning “wedge,” used in the formation of compound words: sphenography.
Also especially before a vowel, sphen-.
Origin of spheno-
< New Latin < Greek sphḗn wedge + -o- -o-
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before a vowel sphen-
- having the shape of a wedgesphenogram
from Greek sphēn wedge
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for spheno-
word-forming element meaning "wedge," from comb. form of Greek sphen "wedge," probably cognate with Old Norse spann "splinter," Old English spon "chip of wood" (see spoon (n.)).
Online Etymology Dictionary, © 2010 Douglas Harper
- Wedge; wedge-shaped:sphenocephaly.
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