Standard Lemma guide

lepto-

prefix · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

prefix

Meaning 1

thin, fine, narrow, slender

Definition source: English Wiktionary via Wiktextract

Usage: morpheme

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

prefix

Meaning 2

lepton

Definition source: English Wiktionary via Wiktextract

Usage: morpheme

Topics: natural-sciences, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Etymology tree Ancient Greek λέπω (lépō) Proto-Indo-European *-tós Proto-Hellenic *-tós Ancient Greek -τός (-tós) Ancient Greek λεπτός (leptós)bor. English lepto- Borrowed from Ancient Greek λεπτός (leptós, “thin”).