delta.
Delta (Greek letter Δ)
Meaning & usage
Delta (Greek letter Δ)
kind of rays consisting of secondary electrons with enough energy to escape a significant distance away from the primary radiation beam and produce further ionization (delta ray)
Where this word comes from
Borrowed from Ancient Greek δέλτα (délta), which is probably of Semitic origin.
having the shape of the Greek letter Δ
delta křídlo
Where this word comes from
Borrowed from Ancient Greek δέλτα (délta), which is probably of Semitic origin.
delta (forked mouth of a river)
Where this word comes from
Borrowed from Ancient Greek δέλτα (délta). Originally used for the delta of the Nile, because its forked shape resembled the Greek letter Δ. The word is probably of Semitic origin.
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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.