Noun

(en noun)

A distinct physical object.

*{{quote-magazine, date=2013-07-26, author= Nick Miroff

, volume=189, issue=7, page=32, magazine=(The Guardian Weekly) , title= Mexico gets a taste for eating insects […] , passage=The San Juan market is Mexico City's most famous deli of exotic meats, where an adventurous shopper can hunt down hard-to-find critters […]. But the priciest items in the market aren't the armadillo steaks or even the bluefin tuna.}}

A line of text having a legal or other meaning; a separate particular in an account.

(label) A question on a test, which may include its answers.

A matter for discussion in an agenda.

(label) Two people who are having a relationship with each other.

* 2010 , (Justin Bieber) featuring (Ludacris), ''

Are we an item ? Girl, quit playin' / "We're just friends," what are you sayin'?

A short article in a newspaper.

(label) A hint; an innuendo.

* (Thomas Fuller) (1606-1661)

A secret item was given to some of the bishops to absent themselves.

Noun

(en noun)

(mathematics, physics) A variable kept constant during an experiment, calculation or similar.

(programming) An input variable of a procedure definition, that gets an actual value (argument) at execution time (formal parameter) .

Roughly, a tuple of arguments could be thought of as a vector, whereas a tuple of parameters''' could be thought of as a covector (i.e., linear functional). When a function is called, a '''parameter tuple becomes "bound" to an argument tuple, allowing the function instance itself to be computed to yield a return value. This would be roughly analogous to applying a covector to a vector (by taking their dot product (or, rather, matrix-product of row vector and column vector)) to obtain a scalar.

(programming) An actual value given to such a formal parameter (argument or actual parameter) .

A characteristic or feature that distinguishes something from others.

(geometry) In the ellipse and hyperbola, a third proportional to any diameter and its conjugate, or in the parabola, to any abscissa and the corresponding ordinate.

The parameter of the principal axis of a conic section is called the latus rectum.

(crystallography) The ratio of the three crystallographic axes which determines the position of any plane.

(crystallography) The fundamental axial ratio for a given species.