Countable Nouns That Start with TR and End with OID

Explore 6 verified English countable nouns starting with TR and ending with OID, including Trapezoid, Triploid, Trendoid, Triterpenoid, Trochoid and Trematoid. Sort these count nouns with singular and plural forms by word length for ESL grammar practice, determiner usage, and plural spelling below, or review singular and plural count rules in our noun grammar guide.

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Starts with TRA
1 words
trapezoid
Starts with TRE
2 words
trendoid
trematoid
Starts with TRI
2 words
triploid
triterpenoid
Starts with TRO
1 words
trochoid

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