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Definition of elongation

elongation

/ɪˌlɒŋˈɡeɪ.ʃən/
e · lon · ga · tion
Plural:elongations
•
Adjective:elongate
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elongation Lexical Profile

elongation Game Scores & Validity

• noun

1

The action of lengthening something, or the state of being made longer in spatial or temporal extent.

Example

"The tensile test measured the elongation of the steel wire before it finally snapped."

2

In astronomy, the angular distance between a celestial body (such as a planet or the Moon) and the Sun as observed from the Earth, or between a satellite and its primary planet.

Example

"Mercury is easiest to observe in the evening sky when it reaches its greatest eastern elongation."

Synonyms
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Antonyms
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• Rhymes for elongation

• Nearby Words

elocution
elongate
elongated
elongation
elope
elopement
eloper

Word Origin & Etymology

Borrowed in the late 14th century from Late Latin elongatio, a noun of action from elongare ('to lengthen or prolong'), formed from ex- ('out') and longus ('long').

Cite this Entry

Wordmom. (2026). Definition of Elongation. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/elongation
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