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adolescent

[ad-l-es-uh nt]
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adjective
  1. growing to manhood or womanhood; youthful.
  2. having the characteristics of adolescence or of an adolescent.
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noun
  1. an adolescent person.
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Origin of adolescent

1475–85; < Latin adolēscent- (stem of adolēscēns growing up, present participle of adolēscere), equivalent to adol(ē)- (see adult) + -ēsc- -esce + -ent- -ent
Related formsad·o·les·cent·ly, adverbpost·ad·o·les·cent, adjective, nounsub·ad·o·les·cent, adjective, noun
Can be confusedadolescence adolescents (see synonym study at adolescent)

Synonyms

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1. immature, young. 3. youth, teenager, minor.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for postadolescent

adolescent

adjective
  1. of or relating to adolescence
  2. informal behaving in an immature way; puerile
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noun
  1. an adolescent person
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for postadolescent

adolescent

adj.

1785, from Latin adolescentem (nominative adolescens) "growing, near maturity, youthful," present participle of adolescere "grow up, come to maturity, ripen" (see adolescent (n.)).

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adolescent

n.

mid-15c., "youth, young man," from Middle French adolescent (15c.) or directly from Latin adolescentem (nominative adolescens) "growing, near maturity, youthful," present participle of adolescere "grow up, come to maturity, ripen," from ad- "to" (see ad-) + alescere "be nourished," hence, "increase, grow up," inchoative of alere "to nourish" (see old). Adolesce was a back-formed verb used early 20c. by H.G. Wells, G.B. Shaw, Louis MacNeice, but it seems not to have taken.

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Online Etymology Dictionary, © 2010 Douglas Harper

postadolescent in Medicine

adolescent

(ăd′l-ĕsənt)
adj.
  1. Of, relating to, or undergoing adolescence.
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n.
  1. A young person who has undergone puberty but who has not reached full maturity; a teenager.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.