amorphous.
Lacking a definite form or clear shape.
Meaning & usage
Lacking a definite form or clear shape.
amorphous blob
The enormous pile of spaghetti landed on the floor in an amorphous heap.
Being without definite character or nature.
Lacking organization or unity.
In the non-crystalline solid state of, or being a non-crystalline counterpart to, a crystalline solid.
Glass is an amorphous solid, but some glass is called "crystal" because it looks crystalline and has been called crystal since before humans even understood molecular structure at all.
Infinite and not the disjoint union of two infinite subsets.
Where this word comes from
From Ancient Greek ἄμορφος (ámorphos, “without form, shapeless, deformed”) (itself from ἀ- (a-, “without”) + μορφή (morphḗ, “form”) + -ous. By surface analysis, a- + -morphous.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.