Standard Lemma guide

protirelin

noun · 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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1

noun

Meaning 1

Thyrotropin-releasing hormone.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: medicine, pharmacology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

hormone released by the hypothalamus that controls the release of thyroid-stimulating hormone from the anterior pituitary

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: thyrotropin-releasing hormone, TRH, thyrotropin-releasing factor, TRF

Antonyms: none provided

Broader terms: hormone, endocrine, internal secretion

History

Etymology

Etymology tree Proto-Indo-European *péh2wr̥ Proto-Hellenic *pāwər Ancient Greek πῦρ (pûr) Proto-Indo-European *-rós Proto-Hellenic *-rós Ancient Greek -ρός (-rós) Ancient Greek πῠρρός (pŭrrhós)der. German Pyrrolbor. English pyrrole English -olidine English pyrrolidine English prolineder. Translingual Pro Proto-Indo-European *dhwer-der. Proto-Hellenic *thurā Ancient Greek θῠ́ρᾱ (thŭ́rā) Ancient Greek -εος (-eos) Ancient Greek θῠρεός (thŭreós) Proto-Indo-European *weyd- Proto-Indo-European *-os Proto-Indo-European *wéydos Proto-Hellenic *wéidos Ancient Greek εἶδος (eîdos) Proto-Indo-European *-os Proto-Indo-European *-ēs Ancient Greek -ης (-ēs) Ancient Greek -ειδής (-eidḗs) Ancient Greek θῠρεοειδής (thŭreoeidḗs)bor. New Latin thyreoīdēsbor. English thyroid Ancient Greek -ο- (-o-)der. Latin -o-bor. English -o- English thyro- Proto-Indo-European *trep-der. Ancient Greek τρέπω (trépō) Proto-Indo-European *-h2 Proto-Indo-European *-éh2 Ancient Greek -ᾱ (-ā) Ancient Greek -η (-ē) Ancient Greek τροπή (tropḗ) Proto-Indo-European *-kos Proto-Hellenic *-kos Ancient Greek -κός (-kós) Ancient Greek -ῐκός (-ĭkós) Ancient Greek τροπῐκός (tropĭkós)bor. English -tropic Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnusder. Old French -inbor. Middle English -in English -ineclip. English -in English -tropin English thyrotropin English release ▲ English -in English -relin English -tirelin English protirelin From Translingual Pro + English -tirelin (“thyrotropin releasing hormone analog”).