age

1. (countable) The amount of time that some being has been alive, or that some thing has been in existence, as measured from its birth or origin until the present or until some other given reference point. (Often measured in number of years; alternatively in months, days, hours, etc.; see also the usage notes)Examples: ""What is the age of your oldest child?" — "He's ten." (ten years old)"; "What were their ages at the time of their marriage?"; "We can determine the age of fossils using radiometric dating."countable

2. (uncountable) The state of being old; the latter part of life.Examples: "Feel awfully about Scott... It was a terrible thing for him to love youth so much that he jumped straight from youth to senility without going through manhood. The minute he felt youth going he was frightened again and thought there was nothing between youth and age."; "Wisdom doesn't necessarily come with age, sometimes age just shows up all by itself."Synonyms: old age, dotage, senility, seniority, age, chair days, codgerhood, eldAntonyms: youthuncountable

3. (countable) Any particular stage of life.Examples: "the age of infancy"countable

4. (countable) The time of life at which some particular power or capacity is understood to become vested.Examples: "the age of consent; the age of discretion"countable

5. (uncountable) Maturity; especially, the time of life at which one attains full personal rights and capacities.Examples: "to come of age; she is now of age"Synonyms: majority, adulthooduncountable

6. (countable) A particular period of time in history, as distinguished from others.Examples: "the golden age of cinema; the first age of colonialism; a bygone age"; "Encircling the marble altar was a congregation of leering shamen. Eerie chants of a bygone age, originating unknown eons before the memory of man, were being uttered from the buried recesses of the acolytes' deep lings ^([sic])."; "The dawn of the oil age was fairly recent. Although the stuff was used to waterproof boats in the Middle East 6,000 years ago, extracting it in earnest began only in 1859 after an oil strike in Pennsylvania. The first barrels of crude fetched $18 (around $450 at today’s prices). It was used to make kerosene, the main fuel for artificial lighting after overfishing led to a shortage of whale blubber."Synonyms: epoch, time, era, age, cycle, day, epoch, eracountable