What does "ampicillin" mean?

A semisynthetic form of penicillin C₁₆H₁₉N₃O₄S that is effective against gram-negative and gram-positive bacteria and is used to treat infections of the urinary, respiratory, and intestinal tracts.

What is a synonym for "ampicillin"?

Common synonyms include: polycillin, principen, sk-ampicillin.

How do you pronounce "ampicillin"?

Pronounced //ˌæm.pɪˈsɪl.ɪn//.

Ampicillin

//ˌæm.pɪˈsɪl.ɪn// noun

noun ·Rare ·Advanced level

Definitions

Noun

1
A semisynthetic form of penicillin C₁₆H₁₉N₃O₄S that is effective against gram-negative and gram-positive bacteria and is used to treat infections of the urinary, respiratory, and intestinal tracts. countable, uncountable
2
semisynthetic penicillin (trade names Principen and Polycillin and SK-Ampicillin) wordnet

Synonyms

All synonyms

polycillin principen sk-ampicillin

Etymology

From am(ino)- + p(en)icillin.

Related phrases

beta lactam broad spectrum antibiotic

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.