Granum

Part of speech: noun

Definitions

1. A small, typically rounded particle or grain, often referring to the basic unit of structure in plant cells
2. A diminutive constituent of a larger whole, particularly in biological contexts
3. A term used in botany to denote a seed, particularly one of cereal plants or the structure forming a part of grains

Etymology: The Latin "granum" meant "grain, seed or small kernel," and it has a long family in English that most speakers never connect to it. "Corn" and "grain" are both descended from the same Latin ancestor, and "gram," the unit of mass, is a further relative, reaching English through French. Few words in English give so many distinct meanings from a single Latin seed. English took "granum" directly in the late 19th century, when scientists needed a precise term for a small rounded particle. The word stayed a specialist borrowing, used in technical and scientific writing rather than everyday speech. Its origin was a plain grain of seed, and it was reshaped into a label for tiny, round bodies of any kind.

Synonyms: granule, grain, particle, kernel