Noun

(en noun)

A particular period of history, especially one considered remarkable or noteworthy.

*{{quote-magazine, date=2012-01

, author=Donald Worster , title=A Drier and Hotter Future , volume=100, issue=1, page=70 , magazine= citation , passage=Phoenix and Lubbock are both caught in severe drought, and it is going to get much worse. We may see many such [dust] storms in the decades ahead, along with species extinctions, radical disturbance of ecosystems, and intensified social conflict over land and water. Welcome to the Anthropocene, the epoch when humans have become a major geological and climatic force.}}

A notable event which marks the beginning of such a period.

(astronomy) A precise instant of time that is used as a reference point.

(computing, uncountable) A precise instant of time that is used as a reference point (e.g. January 1, 1970, 00:00:00 UTC).

Noun

The act of determining, or the state of being determined.

Bringing to an end; termination; limit.

Direction or tendency to a certain end; impulsion.

The quality of mind which reaches definite conclusions; decision of character; resoluteness.

(countable) The state of decision; a judicial decision, or ending of controversy.

(countable) That which is determined upon; result of deliberation; purpose; conclusion formed; fixed resolution.

A flow, rush, or tendency to a particular part; as, a determination of blood to the head.

(countable) The act, process, or result of any accurate measurement, as of length, volume, weight, intensity, etc.; as, the determination of the ohm or of the wave length of light; the determination of the salt in sea water, or the oxygen in the air.

The act of defining a concept or notion by giving its essential constituents.

The addition of a differentia to a concept or notion, thus limiting its extent; -- the opposite of generalization.

The act of determining the relations of an object, as regards genus and species; the referring of minerals, plants, or animals, to the species to which they belong; classification; as, I am indebted to a friend for the determination of most of these shells.