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a. a period of history marked by some feature or characteristic; era
b. (capital when part of a name): the Middle Ages; the Space Age
2. Geology palaeontol
a. a period of the earth's history distinguished by special characteristics
b. the period during which a stage of rock strata is formed; a subdivision of an epoch
3. Myth any of the successive periods in the legendary history of man, which were, according to Hesiod, the golden, silver, bronze, heroic, and iron ages
4. Psychol the level in years that a person has reached in any area of development, such as mental or emotional, compared with the normal level for his chronological age
5. of age adult and legally responsible for one's actions (usually at 18 or, formerly, 21 years)
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



in humans, a stage of development that is characterized by specific regularities of formation of the organism and personality and by relatively stable morphophysiological and psychological traits. While age is a stage in the biological maturing of the organism, a process controlled by genetic factors, it is also a concrete result and stage of the social-psychological development of the personality and is determined by the conditions of life, training, and upbringing.

The content and form of training and upbringing are historically composed and varied according to age; in their turn they affect the determination of the boundaries and possibilities of a given age. In contemporary pedagogy and developmental psychology, several ages are differentiated with respect to the known relationships of the boundaries: infancy (from birth to one year); pre-preschool, or early childhood (from one to three); preschool (from three to seven); early school age (from seven to ten years); juvenile, or middle school (from ten to 15); and late school, or early youth (15 to 18 years old). Beyond these limits there is no generally accepted classification in the literature; only old age is considered separately. With the increased longevity noted in the 20th century, gerontology and gerontopsychology have arisen as disciplines to study the problems of prolonging the active life of a human being. Each age has a characteristic structure of cognitive, emotional, and volitional properties and qualities; forms of behavior; types of relationships to the environment; and peculiarities of structure and functioning of various organs and systems of the organism. This structure, however, is not invariable: in the 20th century a general acceleration of the physical and mental development of children has been noted. On the other hand, educational theory, in solving the problem of optimizing training, widens the possibilities of age and the boundaries of acquiring knowledge. Training must take into account not only the level of development achieved but also the development perspectives (the concept of “zones of imminent development,” as formulated by L. S. Vygotskii): the teacher must know not only what is present in a child of a given age but also what can be achieved, given certain conditions, by the child in the near future.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


Period of time from origin or birth to a later time designated or understood; length of existence.
Any one of the named epochs in the history of the earth marked by specific phases of physical conditions or organic evolution, such as the Age of Mammals.
One of the smaller subdivisions of the epoch as geologic time, corresponding to the stage or the formation, such as the Lockport Age in the Niagara Epoch.


(aerospace engineering)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Ager also arranged for Dunningham Decorators to be overpaid by PS54,000 for some work they had done, which ended up in Dunningham's personal account.
SOLE SURVIVOR: Sue Atherton, shop manager for Charles Ager, with the wartime woman's brogue which survived the bombing that destroyed the shop REDUCED TO RUBBLE: Coventry's Charles Ager shoe shop after the 1940 Blitz - just the girders were left standing
Havant council in Hants apologised to Mrs Ager but admitted it did prefer bin handles to face the road.
"The Pirates do the basics well," said Ager. "They have a good scrum and lineout but they can also play as well.
FULL RESULTS (West Wirral unless stated): Juniors: Joey Rotheram Wpts John Ashton (Shotton); Kieran Fisher Lpts Reece Smailes (Spennymoor); Daniel Roberts (Manx) Lpts to Luke Ford (Failsworth); Graeme McGinty Wpts Aaron Parkinson (Failsworth); Connor McDaid Wpts Bryn Jones (Willaston); Jamie Tollerton Lpts Adam Ager (Skelmersdale); Jay Rutherford WRSC 2 v Jordan Powell (New Bury,Farnworth); Jay McDonald (Everton Red Triangle) Wpts James Brown (Spennymoor).
Ager also said that the CMWS deliveries represent the first step in equipping USASOC helicopters with the full Suite of Integrated Infrared Countermesures (SIIRCM), which includes the AN/ALO-2 12 Advanced Threat Infrared Counter-measures (ATIRCM) system.
Nothing gives a Sailor more pride than to know [what was done was] something that helped save our country so much money," Ager said.
Like every other Tesco senior executive, Ager lauds the company initiatives that have put it there.
New Ager Sparrow has begun dating a man, and the other characters--all around Bechdel's age--feel out of step with the new generation of "postgays."
Yet there's nothing in Bartolini's work of the uncritical enthusiasm of the neophyte or the banal syncretism of the New Ager. Instead, there is a deliberate loss of self, for instance, in contemplation of a fragment of an Indian temple, in a shadow that stands out among the columns or has perhaps been generated by a projecting capital.
Walker has also named Susan Ager administrator of Walker Cityview, a skilled nursing center in downtown Minneapolis.
The tools, in use by over 1,700 of the world's largest companies in 30 countries, include Ager 2000(TM), a semantic date aging product; HourGlass 2000(TM), which supports more MVS languages and systems software than any other date simulator; Version Merger(TM), the leading version reconciliation tool, critical in the testing phase of a Y2K clean management program and The Relational Tools(TM) for DB2, the only suite of relational test data creation and verification tools.