Archaeornithes
plural noun
Ar·chae·or·ni·thes
| \ -ˈȯrnəˌthēz, -ˌȯrˈnī(ˌ)thēz \
Definition of Archaeornithes
: a subclass of Aves comprising the earliest and most primitive of fossil birds, retaining distinctive reptilian characters, and including the two genera Archaeornis and Archaeopteryx
Test Your Vocabulary
Great Words for Scrabble
-
- Which of the following Q-without-U words means the number five in cards or dice?

Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share Archaeornithes