amoeba (English)
Where does "amoeba" come from?
The English word 'amoeba' was learnedly borrowed from Ancient Greek 'ἀμοιβή' (amoibḗ), meaning 'change', chosen to describe the organism because of its constantly shifting shape[1]. This noun was derived from the Greek verb 'ἀμείβω' (ameíbō), meaning 'to exchange', combined with the verbal noun suffix '-η' (-ē)[2]. Linguists trace this Greek verb back to the Proto-Indo-European reconstructed root '*h₂meygʷ-'[3].
Open questions
- The Proto-Indo-European root '*h₂meygʷ-' is tentatively considered an extension of an earlier root '*h₂mey-'. [4]
Full etymology tree
- amoeba (English), 'A member of the genus Amoeba of unicellular protozoa that moves by means of temporary projections called pseudopodia.'
- derived ἀμοιβή (amoibḗ) (Ancient Greek), 'requital, recompense'
- suffix ἀμείβω (ameíbō) (Ancient Greek), 'to exchange'
- inherited *h₂meygʷ- (Proto-Indo-European), 'to change, exchange'
- derived *mey- (Proto-Indo-European), 'to strengthen'
- inherited *h₂meygʷ- (Proto-Indo-European), 'to change, exchange'
- affix -η (-ē) (Ancient Greek), 'suffix of nouns in the first declension.'
- suffix ἀμείβω (ameíbō) (Ancient Greek), 'to exchange'
- derived ἀμοιβή (amoibḗ) (Ancient Greek), 'requital, recompense'
Ancestors
- ἀμοιβή (Ancient Greek)
Descendants and derived words
- acanthamoeba (English)
- amoebalike (English)
- coamoeba (English)
Sources
- amoeba (English) - Wiktionary
- ἀμοιβή (amoibḗ) (Ancient Greek) - Wiktionary
- ἀμείβω (ameíbō) (Ancient Greek) - Wiktionary
- h₂meygʷ- (Proto-Indo-European) - Wiktionary
Updated October 2026
Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris