Definition of Anatidae
: a large family of chiefly aquatic birds (order Anseriformes) having relatively heavy bodies, short legs, webbed feet, a bill with a hard horny nail at the tip and transverse toothlike ridges on the biting edges and including the ducks, geese, swans, and related forms
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Join MWU now and get access to America’s largest dictionary, with:
- 300,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of anatidae
New Latin, from Anat-, Anas, type genus + -idae
First Known Use: 1824
Seen and Heard
What made you want to look up Anatidae? Please tell us where you read or heard it (including the quote, if possible).