Delta Definition
dĕltə
noun
The fourth letter of the Greek alphabet (Δ, δ)
Webster's New World
An object shaped like a triangle.
American Heritage
Something in the shape of a delta (Δ); specif., a tract of flat land, usually triangular, formed by deposits of soil and sand at the mouth of a large river.
Webster's New World
A similar deposit at the mouth of a tidal inlet, caused by tidal currents.
American Heritage
A finite increment in a variable.
American Heritage
adjective
Being in the fourth position relative to a designated carbon atom in an organic molecule at which an atom or a group may be substituted.
American Heritage
Of, in, or from the Delta (see phrase below)
Delta blues.
Webster's New World
Referring to the fourth of a group of isomers, or molecules of similar origin or properties, determined arbitrarily by those who discover or classify them. Used in combination.
American Heritage
See alpha.
Webster's New World
abbreviation
Diploma in English Language Teaching to Adults, an advanced qualification to teach English, higher than the CELTA, accredited by the University of Cambridge.
Wiktionary
Other Word Forms of Delta
Noun
Singular:
delta
Plural:
deltasIdioms, Phrasal Verbs Related to Delta
- the Delta
Origin of Delta
-
Middle English from Latin from Greek of Phoenician origin dl in Semitic roots
From American Heritage Dictionary of the English Language, 5th Edition
From Ancient Greek δέλτα (delta).
From Wiktionary
Delta Is Also Mentioned In
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