ad·​ven·​ti·​tious | \ ˌad-(ˌ)ven-ˈti-shəs How to pronounce adventitious (audio) , -vən-\

Definition of adventitious

1 : coming from another source and not inherent or innate a Federal house without adventitious later additions adventitious influences
2 : arising or occurring sporadically or in other than the usual location adventitious roots

Keep scrolling for more

Other Words from adventitious

adventitiously adverb

Did You Know?

Adventitious is an adventitious word: it comes to English from the Latin adventicius, meaning "coming from outside." This, in turn, comes from "adventus," the past participle of the verb advenire, meaning "to arrive" or "to happen." That verb is also a source of several other English words, including "advent" (which, in its uncapitalized form, can refer to any coming or arrival), "adventure" (a word whose earliest sense was "chance happening"), and "avenue" (a means of arrival).

Examples of adventitious in a Sentence

the point of view that art should be for art's sake and that moral considerations are adventitious to the study of art

First Known Use of adventitious

1603, in the meaning defined at sense 1

History and Etymology for adventitious

borrowed from Latin adventīcius "coming from outside, external, foreign," from adventus, past participle of advenīre "to arrive, approach" + -īcius -itious — more at advent

Keep scrolling for more

Learn More about adventitious

Listen to Our Podcast about adventitious

Statistics for adventitious

Look-up Popularity

Time Traveler for adventitious

The first known use of adventitious was in 1603

See more words from the same year

Keep scrolling for more

More Definitions for adventitious


ad·​ven·​ti·​tious | \ -əs How to pronounce adventitious (audio) \

Medical Definition of adventitious

1a : arising sporadically or in other than the usual location an adventitious part in embryonic development
b : occurring spontaneously or accidentally in a country or region to which it is not native an adventitious insect
3 : not congenital adventitious deafness

Other Words from adventitious

adventitiously adverb

More from Merriam-Webster on adventitious

Rhyming Dictionary: Words that rhyme with adventitious

Thesaurus: All synonyms and antonyms for adventitious

Comments on adventitious

What made you want to look up adventitious? Please tell us where you read or heard it (including the quote, if possible).


appealing forcibly to the mind or reason

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
Spell It

Can you spell these 10 commonly misspelled words?

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!