- 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-
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
before a vowel sphen-
- having the shape of a wedgesphenogram
from Greek sphēn wedge
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.