broad- or narrow-gauge

In railway construction, respectively greater or less than standard gauge, in Britain 1.435 metres (561/2 inches)

standard /stanˈdərd/

1. An established or accepted model
2. (often in pl) a principle of behaviour or morality
3. A criterion
4. A definite level of excellence or adequacy required, aimed at, or possible
5. An overall level achieved
6. An authorized model for a unit of measurement
7. The legally required weight and purity of the metal used in coins
8. The commodity, eg gold or silver, that is taken as the basis of value in a currency
9. A measure of wood in board form, equivalent to 4.7 cubic metres, 165 cubic feet or 1980 board-feet (board-foot = a piece of wood one foot square and one inch thick)
10. A flag or military symbolic figure on a pole, marking a rallying point
11. A rallying point (also figurative)
12. A long tapering flag notched and rounded at the end, bearing heraldic symbols and fixed in the ground (heraldry)
13. A flag generally
14. A regimental flag
15. A standard-bearer
16. A standing shrub or tree not trained on an espalier or a wall
17. A fruit tree or other tree grafted and trained so as to have an upright stem without branches
18. An upright post, pillar, stick
19. A tree left growing amidst coppice
20. A song or piece of music that has remained popular over the years
21. A class or grade in an elementary school
22. The uppermost petal of a papilionaceous flower
23. A streaming wing feather
24. A structure erected at a conduit (obsolete)
25. An accepted authoritative statement of a church's creed
26. That which stands or is fixed

1. Serving as or conforming to a standard
2. Of the normal, regular quality, size, etc, without additions or variations
3. Of accepted and enduring value
4. Growing as a standard
5. Standing upright

standardīzāˈtion or standardīsāˈtion noun

standˈardize or standˈardise transitive verb

To make, or keep, of uniform size, shape, etc

standˈardizer or standˈardiser noun

standard assessment task noun (education)

In England and Wales, a component of the standardized testing procedures employed, as part of the national curriculum, to determine a pupil's level of attainment in a particular subject (abbrev SAT)

standard atmosphere noun

1. 101325 newtons per square metre, or 1013250 dynes per square centimetre
2. A standard of measurement of atmospheric conditions used in comparing the performance of aircraft (aeronautics, etc)

standˈard-bearer noun

1. A person who carries a standard or banner
2. An outstanding leader

standard bread noun

Bread made with flour containing 80 per cent of the wholewheat including germ and semolina

Standˈardbred noun

A breed of horse orig developed in the USA as harness racehorses for trotting or pacing to a standard minimum speed

adjective

Relating to this breed of horses

standard candle see candle

standard cost noun

An estimated cost of a manufacturing process, etc against which the actual cost is assessed

standard deviation noun

In a frequency distribution, the root of the average of the squares of the differences from their mean of a number of observations, used as a measure of dispersion

standard English noun

The form of English taught in schools, etc, and used, esp in formal situations, by the majority of educated English-speakers

standard error noun

1. Standard deviation
2. Standard deviation divided by the root of the number of observations in a sample

standard gauge see under gauge

Standard grade noun

1. A former educational qualification awarded in Scotland
2. A subject offered, or satisfactory assessment obtained, at Standard grade

standardized mortality rate noun (medicine)

The ratio of observed to expected deaths in a subpopulation (abbrev SMR)

standard lamp noun

A lamp on a tall support

standard of living noun

A measure indicating the relative wealth and comfort in which people live

standard solution noun

A solution of known concentration, used for purposes of comparison, commonly containing the equivalent, in grammes, of the solute to a litre of solution (normal solution) or some simple fraction (as decinormal, one-tenth normal)

standard temperature and pressure noun

A temperature of 0ºC and a pressure of 101325N/m² (abbrev stp)

standard wing noun

A bird of paradise of the Moluccas with a pair of erectile white feathers at the bend of the wing