Standard Lemma guide

pleomorphism

noun · 4 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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  • US: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: P L IY2 AH0 M AO1 F IH0 Z AH0 M Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

The occurrence of multiple structural forms during the life cycle of an organism.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: biology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Synonym of polymorphism.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: polymorphism

Antonyms: none provided

3

noun

Meaning 3

(biology) the appearance of two or more distinctly different forms in the life cycle of some organisms

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: organic phenomenon

4

noun

Meaning 4

(chemistry) the existence of different kinds of crystal of the same chemical compound

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: polymorphism

Antonyms: none provided

Broader terms: chemical phenomenon

Narrower terms: dimorphism

History

Etymology

From pleo- (“full, many”) + -morphism.