Standard Lemma guide

pyrethrum

noun · 7 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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  • US: /paɪˈɹiθɹəm/

1

noun

Meaning 1

Any of several daisy-like perennial African plants of the genus Tanacetum, especially Tanacetum cinerariifolium.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Anacyclus pyrethrum (pellitory of Spain)

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Any of several insecticides obtained from these plants; pyrethrin.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: genus Pyrethrum

Antonyms: none provided

Broader terms: asterid dicot genus

5

noun

Meaning 5

spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers; source of an insecticide; sometimes placed in genus Chrysanthemum

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: painted daisy, Tanacetum coccineum, Chrysanthemum coccineum

Antonyms: none provided

Broader terms: flower

6

noun

Meaning 6

white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Dalmatian pyrethrum, Dalmatia pyrethrum, Tanacetum cinerariifolium, Chrysanthemum cinerariifolium

Antonyms: none provided

Broader terms: herb, herbaceous plant

7

noun

Meaning 7

made of dried flower heads of pyrethrum plants

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: insecticide, insect powder

History

Etymology

From Old English pyretre, from (and later reformed after) Latin pyrethrum (in Pliny), from Hellenistic Ancient Greek πύρεθρον (púrethron).

Across languages

Translations

6 source translations are retained for this English entry.

  • Japanese: 除虫菊 (jochūgiku) — any of several plants of the genus Tanacetum
  • Kikuyu: barĩthiramu — any of several plants of the genus Tanacetum
  • Middle High German: bërtram — any of several plants of the genus Tanacetum
  • Persian: گزترخون (gaztarxun) — any of several plants of the genus Tanacetum
  • Persian: کزطلخون (kaztalxun) — any of several plants of the genus Tanacetum
  • Swahili: pareto — any of several plants of the genus Tanacetum