longevity

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lon·gev·i·ty

(lŏn-jĕv′ĭ-tē, lôn-)

n. pl. lon·gev·i·ties

a. Long life; great duration of life: His longevity vexed his heirs.

b. Length or duration of life or viability: comparing the longevity of men and women; factors that affect the longevity of seeds.

2. Long duration or continuance, as in an occupation: had unusual longevity in the company; her longevity as a star.

[Late Latin longaevitās, from Latin longaevus, ancient : longus, long; see del- in Indo-European roots + aevum, age; see aiw- in Indo-European roots.]

lon·ge′vous (-jē′vəs) adj.

(lɒnˈdʒɛvɪtɪ)

1. long life

2. relatively long duration of employment, service, etc

[C17: from Late Latin longaevitās, from Latin longaevus long-lived, from longus long¹ + aevum age]

longevous adj

(lɒnˈdʒɛv ɪ ti, lɔn-)

n.

1. long life; great duration of individual life: a family known for longevity.

2. length of life: research in longevity.

3. length of service, tenure, etc.; seniority: promotions based on longevity.

[1605–15; < Late Latin longaevitās. See longevous, -ity]

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun	1.	longevity - duration of service; "her longevity as a star"; "had unusual longevity in the company" length of service longness - duration as an extension
	2.	longevity - the property of being long-lived seniority oldness - the opposite of youngness