Delta

Delta

Definition of DELTA

—a communications code word for the letter d

First Known Use of DELTA

1952

¹del·ta

noun \ˈdel-tə\

Definition of DELTA

1

: the 4th letter of the Greek alphabet — see alphabet table

2

: something shaped like a capital Greek delta; especially : the alluvial deposit at the mouth of a river

3

: an increment of a variable —symbol Δ

4

: delta wave

— del·ta·ic \del-ˈtā-ik\ adjective

Origin of DELTA

Middle English deltha, from Greek delta, of Semitic origin; akin to Hebrew dāleth daleth

First Known Use: 13th century

Other Geology Terms

anthracite, boulder, cwm, erratic, igneous, intrusive, mesa, sedimentary, silt, swale

²delta

adjective

Definition of DELTA

: fourth in position in the structure of an organic molecule from a particular group or atom —symbol ƍ

First Known Use of DELTA

circa 1929

Other Chemical Engineering Terms

alkali, cation, decant, hygroscopic, isotope, oxidize, slurry, solute, viscous

Del·ta

geographical name \ˈdel-tə\

Definition of DELTA

municipality Canada in SW British Columbia pop 96,723