- a combining form meaning “wood,” used in the formation of compound words: ligniform.
Origin of ligni-
< Latin, combining form representing lignum wood
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
ligno- or before a vowel lign-
- indicating woodlignocellulose
from Latin lignum wood
Word Origin and History for ligni-
word-forming element meaning "wood," from Latin lignum "wood, firewood," from PIE *leg-no-, literally "that which is collected," from root *leg- "to collect" (see lecture (n.)).
Online Etymology Dictionary, © 2010 Douglas Harper