delta
noun
the fourth letter of the Greek alphabet (Δ, δ).
deltas
-
pluralof delta.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Among the most important contributors are heavy groundwater pumping, oil and gas extraction, the compression of relatively young sediments in river deltas, and the weight of expanding urban areas.
From Science Daily ● Aug. 3, 2026
The world-renowned site features iron carbonate concretions that formed some 309 million years ago, fossilizing within them ancient creatures that had once thrived in the area's lush swamps, shallow seas and river deltas.
From Barron's ● Jun. 18, 2026
This research offers the first detailed, high-resolution analysis of elevation loss across 40 river deltas around the world.
From Science Daily ● Apr. 20, 2026
"Centimeters of sea level rise will greatly increase the risk of flooding in deltas," Lin said.
From Science Daily ● Oct. 23, 2025
Her eyes were the same deep-set smiles as her son’s, with more extensive deltas of creases at the corners.
From "Strange the Dreamer" by Laini Taylor
