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delta

noun

Simple meaning

A low triangular area of alluvial deposits where a river divides before entering a larger body of water.

Pronunciation

Say it like this:

dehltuh

Say the bold part a little louder.

US device voice
IPA pronunciation (US)

ˈdɛltə

This word is pronounced essentially the same in American and British English, so one transcription covers both.

IPA (International Phonetic Alphabet) is a standard way of writing speech sounds.

Word Review

Definition

Everyday modern meanings first, grouped by part of speech.

noun

  1. A low triangular area of alluvial deposits where a river divides before entering a larger body of water

  2. A landform at the mouth of a river where it empties into a body of water.

  3. mathematicsphysicsengineering

    The symbol Δ; A change in a quantity, likely from "d" for "difference".

  4. finance

    The rate of change in an option value with respect to the underlying asset's price.

  5. The fourth letter of the modern Greek alphabet Δ, δ.

  6. A type of cargo bike that has one wheel in front and two in back.

Word at a Glance

Difficulty
A2 · Elementary
Frequency
Common
Typical Use
Everyday English

Word Aura™

How this word commonly comes across.

Aura for this meaning

This meaning: A low triangular area of alluvial deposits where a river divides before entering a larger body of water

Used this way, delta is a reasonably familiar word that usually carries little praise or criticism of its own. It usually sounds natural in a wide range of settings.

Emotional tone
Neutral
Formality
Neutral
Intensity
Not strongly marked
How common
Moderately common
Connotation
Matter-of-fact
Usage feel
Neutral and straightforward

Word Aura describes common impressions, not a measurement. Tone changes with sentence, speaker, relationship and situation.

More ways to use delta

  • “The Mississippi River delta.”noun

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Common Patterns and Combinations

How this word naturally appears with others.

Low / landform

river deltaniger deltanile delta

Fourth

phi deltaalpha deltadelta kappa

Other combinations

delta functiondelta region

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Word Family

Related forms, grouped by how they connect.

Compound terms

Established multiword terms.

  • delta ironnounCompound term

    An allotrope of iron that is stable between 1403 degrees centigrade and the melting point (= 1532 degrees).

  • delta raynounCompound term

    An electron ejected from matter by ionizing radiation.

  • delta rhythmnounCompound term

    The normal brainwave in the encephalogram of a person in deep dreamless sleep.

  • delta wavenounCompound term

    The normal brainwave in the encephalogram of a person in deep dreamless sleep.

  • delta wingnounCompound term

    An airplane with wings that give it the appearance of an isosceles triangle.

  • delta hepatitisnounCompound term

    A severe form of hepatitis.

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Dictionary data from Wiktionary via the Free Dictionary API. Simple meanings, combinations and word intelligence are built from verified reference data, no AI is used to load this page.