from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The fourth letter of the Greek alphabet. See Table at alphabet.
- n. An object shaped like a triangle.
- n. A usually triangular alluvial deposit at the mouth of a river.
- n. A similar deposit at the mouth of a tidal inlet, caused by tidal currents.
- n. Mathematics A finite increment in a variable.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The fourth letter of the modern Greek alphabet Δ, δ.
- n. A landform at the mouth of a river where it empties into a body of water.
- n. The letter D in the ICAO spelling alphabet, which assigns words to letters of the alphabet.
- n. The symbol Δ.
- n. A small but noticeable effect, compare with epsilon.
- n. The set of differences between two versions of a file.
- n. The angle subtended at the center of a circular arc.
from the GNU version of the Collaborative International Dictionary of English
- n. The fourth letter of the Greek alphabet (Δ δ), corresponding to d.
- n. A tract of land shaped like the letter delta (Δ), especially when the land is alluvial and inclosed between two or more mouths of a river.
- n. The closed figure produced by connecting three coils or circuits successively, end for end, esp. in a three-phase system; -- often used attributively
from The Century Dictionary and Cyclopedia
- n. The name of the Greek letter
Δ, δ, answering to the Latin and English D. See D.
- n. A triangular island or alluvial tract included between the diverging branches of the mouth of a great river: as, the delta of the Nile, of the Ganges, of the Mississippi, etc.
- n. In anatomy, a triangular space or surface.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an object shaped like an equilateral triangle
- n. a low triangular area of alluvial deposits where a river divides before entering a larger body of water
- n. the 4th letter of the Greek alphabet
Middle English, from Latin, from Greek, of Phoenician origin; see dl in Semitic roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek δέλτα (delta). (Wiktionary)