Standard Lemma guide

tachyphylaxis

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: /ˌtækɪfɪˈlæksɪs/
  • Canada, General-American: /ˌtækɪfɪˈlæksɪs/
  • Canada, General-American: /ˌtækəfəˈlæksɪs/
  • Australian: /ˌtækɪfɪˈlæksɪs/
  • Australian: /ˌtækəfəˈlæksɪs/
  • New-Zealand: /ˌtɛkəfəˈlɛksəs/

1

noun

Meaning 1

A rapidly decreasing response to a drug following administration of the initial doses.

Definition source: English Wiktionary via Wiktextract

Topics: medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Etymology tree Ancient Greek τᾰχῠ́ς (tăkhŭ́s)bor. English tachy- English phylaxis English tachyphylaxis From tachy- + phylaxis.