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Definition of oat

oat

/oʊt/
oat

Plural:oats
•
Adjective:oaten
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oat Lexical Profile

oat Game Scores & Validity

• noun

1

The starchy, edible seed of the oat plant, widely consumed as oatmeal, rolled into flakes for baking, or used to produce dairy alternatives.

Example

"She carefully brushed a single rolled oat off the bakery counter."


2

A widely cultivated cereal grass (Avena sativa) grown in temperate regions for its edible seed and often used as forage.

Example

"The agronomist developed a new, drought-resistant variety of oat that thrives in arid climates."

Word Nuance & Usage

While the singular 'oat' is used to refer to the plant or a single seed (and frequently functions as an attributive modifier, as in 'oat milk' or 'oat bran'), the word is overwhelmingly used in its plural form 'oats' when referring to the harvested grain as a food source.

• Rhymes for oat

Word Origin & Etymology

From Old English 'āte' (plural 'ātan'), denoting the grain or the plant. The ultimate origin is unknown, but it may share a root with Old Norse 'eitil' (nodule) referencing the shape of the seed.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Oat. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/oat
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