Standard Lemma guide

attowatt

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.

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noun

Meaning 1

An SI unit of power equal to 10−18 watts. Symbol: aW

Definition source: English Wiktionary via Wiktextract

Topics: metrology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From atto- + watt.

Word forms

Inflections and variants

attowatts — plural

Word family

Derived and related words

Derived: none provided

Related: none provided

Semantic map

Other relationships

Sources

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