Standard Lemma guide

leptin

noun · 1 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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /ˈlɛptɪn/
  • General-American: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: L EH1 P T IH0 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

A protein hormone produced in adipose tissue; it plays a role in regulating appetite and metabolism.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Ancient Greek λεπτός (leptós, “thin”) + -in

Across languages

Translations

9 source translations are retained for this English entry.

  • Finnish: leptiini — a protein hormone
  • Hungarian: jóllakottsághormon — a protein hormone
  • Hungarian: leptin — a protein hormone
  • Icelandic: leptín — a protein hormone
  • Italian: leptina — a protein hormone
  • Spanish: leptina — a protein hormone
  • Swedish: leptin — a protein hormone
  • Turkish: leptin — a protein hormone
  • Welsh: leptin — a protein hormone