Standard Lemma guide
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.
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noun
A plant of the genus Ambrosia, native to North America and a common invasive species elsewhere, particularly noted for producing pollen that triggers hay fever.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Synonyms: ambrosia
Antonyms: none provided
noun
Synonym of ragwort.
Definition source: English Wiktionary via Wiktextract
Usage: Ireland, Scotland, countable, uncountable
No example sentence was provided for this meaning.
Synonyms: ragwort
Antonyms: none provided
noun
A summer cypress, mock cypress (Bassia scoparia).
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: ambrosia, bitterweed
Antonyms: none provided
Broader terms: weed
Narrower terms: common ragweed, Ambrosia artemisiifolia, great ragweed, Ambrosia trifida, western ragweed, perennial ragweed, Ambrosia psilostachya
noun
widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: ragwort, tansy ragwort, benweed, Senecio jacobaea
Antonyms: none provided
Broader terms: weed
History
Etymology tree English ragwort Proto-West Germanic *weud Old English wēod Middle English weed English weed blend English ragweed Alteration of earlier ragwort; presumably equivalent to ragged + weed, with "rag" referring to the tattered appearance of the plant's leaves. Compare Middle English ragwed (“butcher's broom”), of uncertain linguistic relationship.
Across languages
18 source translations are retained for this English entry.
