adj.
Pronunciation: ek- ' str ā -n ē - ə s
Function: adjective
Etymology: Latin extraneus ― more at STRANGE
Date: 1638
1 : existing on or coming from the outside < extraneous light>
2 a : not forming an essential or vital part < extraneous ornamentation> b : having no relevance <an extraneous digression>
3 : being a number obtained in solving an equation that is not a solution of the equation < extraneous roots>
synonyms see EXTRINSIC
– ex · tra · ne · ous · ly adverb
– ex · tra · ne · ous · ness noun