Noun

(en noun)

A length of some object.

One of the parts into which any body naturally separates or is divided; a part divided or cut off; a section; a portion.

*{{quote-magazine, year=2013, month=September-October, author=(Henry Petroski)

, magazine=(American Scientist), title= The Evolution of Eyeglasses , passage=The ability of a segment' of a glass sphere to magnify whatever is placed before it was known around the year 1000, when the spherical ' segment was called a reading stone,

(label) A portion.

# A straight path between two points that is the shortest distance between them.

# (label) The part of a circle between its circumference and a chord (usually other than the diameter).

# (label) Any of the pieces that comprise an order tree.

(label) A portion.

# (label) A discrete unit of speech: a consonant or a vowel.

# (label) A portion of an organ whose cells are derived from a single cell within the primordium from which the organ developed.

#*

In Lejeuneaceae vegetative branches normally originate from the basiscopic basal portion of a lateral segment half, as in the Radulaceae, and the associated leaves, therefore, are quite unmodified.

# (label) One of several parts of an organism, with similar structure, arranged in a chain; such as a vertebra, or a third of an insect's thorax.

(label) A part of a broadcast program, devoted to a topic.

* {{quote-news, year=2012, date=April 29, author=Nathan Rabin

, title= TV: Review: THE SIMPSONS (CLASSIC): “Treehouse of Horror III” (season 4, episode 5; originally aired 10/29/1992) , passage=In “Treehouse Of Horror” episodes, the rules aren’t just different—they don’t even exist. If writers want Homer to kill Flanders or for a segment to end with a marriage between a woman and a giant ape, they can do so without worrying about continuity or consistency or fans griping that the gang is behaving out of character.}}

(label) An Ethernet bus.

(label) A region of memory or a fragment of an executable file designated to contain a particular part of a program.

(label) A portion of an itinerary; can be a flight or train between two cities, a car or hotel booked in a particular city.

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).