Nodulus

Part of speech: noun

Pronunciation: /ˈnɒd.jʊ.ləs/

Definitions

1. A tiny rounded structure resembling a nodule, typically encountered in biological studies
2. A small, rounded mass often identified within plant or animal tissues or structures
3. A minute, rounded form found within biological tissues that resembles a small lump

Etymology: "Nodulus" is the Latin diminutive of "nodus," meaning "knot," so the word literally describes a little knot. The Latin "nodus" itself is a knot in the everyday sense of a tied cord, and it also came to mean a knot or lump in the body, a sense that shows how readily the image of a tangled bit of string turns into a swelling under the skin. The diminutive ending "-ulus" shrinks that knot down to something small and rounded. English took the word directly from Latin, so "nodulus" is a borrowing rather than a word that passed through French. It is a doublet of "nodule," the form that reached English through the same Latin source but was adapted to English patterns. Both words keep the core idea of a small knot-like lump, with "nodule" serving as the everyday English form and "nodulus" retaining the Latin spelling and ending typical of anatomical and scientific writing.