Standard Lemma guide

ryanodine

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

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  • Received-Pronunciation: /rʌɪˈæn.əd.iːn/
  • General-American: /raɪˈæn.əˌdiːn/
  • General-American: /raɪˈæn.əd.ɪn/
  • CMU ARPABET: R AY0 AE1 N AH0 D IY0 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

A poisonous alkaloid which occurs in the stems of the tropical American shrub Ryania speciosa (family Flacourtiaceae) and has been used as an insecticide and in experimental studies of calcium release within cells.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

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

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Etymology tree Translingual Ryania English d Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnusder. Old French -inbor. Middle English -in English -ine English ryanodine From Translingual Ryania + English d + -ine.