also: ゴマつぶ
noun
sesame seed
Refers to a single seed of the sesame plant, often used in cooking or as a size comparison.
パンにごま粒がたくさんついている。
There are many sesame seeds on the bread.
この料理にはごま粒をふりかけると香ばしくなる。
Sprinkling sesame seeds on this dish makes it fragrant.
ごま is the general term for sesame (the plant or seeds collectively), while ごま粒 specifically refers to individual seeds.
Compound of ごま (sesame) and 粒 (grain/seed). The word straightforwardly means 'sesame seed'.