Standard Lemma guide

phensuximide

noun · 2 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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  • General-American: /fɛnˈsʌk.sɪˌmaɪd/

1

noun

Meaning 1

An anticonvulsant drug C11H11NO2 sometimes used in the treatment of absence seizures.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: medicine, pharmacology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

anticonvulsant (trade name Milontin) used to treat petit mal

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Milontin

Antonyms: none provided

Broader terms: anticonvulsant, anticonvulsant drug, antiepileptic, antiepileptic drug

History

Etymology

From phen(yl) + succi(n)imide.