noun · verb · 3 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.
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Pronunciation
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/ˈmɛɡəˌdəʊs/
/ˈmɛɡəˌdoʊs/
1
noun
Meaning 1
A dose of drug or vitamin far exceeding the normal or recommended amount, and usually given intentionally. Compare overdose.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
verb
Meaning 2
To dose (a patient) with a very large amount of a drug.
Definition source: English Wiktionary via Wiktextract
Usage: transitive
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
verb
Meaning 3
To dose with a very large amount of (a drug).
Definition source: English Wiktionary via Wiktextract
Usage: transitive
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
History
Etymology
Etymology tree Proto-Indo-European *méǵh2s Proto-Hellenic *mégas Ancient Greek μέγᾰς (mégăs)der. English mega- English dose English megadose From mega- + dose.