English dictionary: words starting with ort

noun

A scrap or remainder of food from a meal.

Usage examples:

The men's job was to operate the sweepers, brushing up the vegetable waste, the paper bags, the scr…

noun

A citrus fruit which is a cross between an orange and a tangerine, developed in jamaica in the 1920s.

Usage examples:

There are large round dishes with ortaniques around the rim (an ortanique is a citrus fruit) and th…

noun

A compacted, but not cemented, lower horizon of a podzol.

noun

An individual plant that gives rise to a clone of plants (ramets) by vegetative reproduction or propagation.

noun

As much of something as could be bought for a penny

Usage examples:

It won't make a pennyworth of difference to me.

adjective

Designating a style of singing of very high pitch, or a song sung in this style.

adjective

Of a polyhedron: composed of pairs of equal parallel faces of which equivalent points are connected by lines perpendicular to the faces.

noun

An early form of television camera tube similar to an iconoscope.

noun

An early form of television camera tube; = orthicon .

noun

An early form of television camera tube similar to an iconoscope.

noun

A fossil articulate brachiopod of the genus orthis, family orthidae, or order orthida, of the palaeozoic era.

adjective

Of or relating to the family orthidae or order orthida of fossil brachiopods.

noun

A silicate of cerium, iron, aluminium, and other metals, occurring as elongated crystals and now regarded as a variety of allanite.

combining form

Denoting a compound from which a meta -compound is formed by dehydration.

Usage examples:

Orthophosphoric acid

Straight; rectangular; upright.

Usage examples:

Orthodontics

noun

The point of intersection of the three perpendiculars drawn from the vertices of a triangle to the opposite sides.

noun

The point of intersection of the three perpendiculars drawn from the vertices of a triangle to the opposite sides.

adjective

Having a head with a medium ratio of breadth to height.

noun

A fossil orthoconic shell of a nautiloid cephalopod mollusc of the palaeozoic or early mesozoic eras; specifically a member of the genus orthoceras.

noun

A fossil shell of a nautiloid cephalod mollusc of the palaeozoic or early mesozoic eras, having a long, straight (or nearly straight) chambered shell; specifically a member of the former genus orthoceratites or family orthoceratidae; compare orthoceras . also in latin form orthoceratites (in later use only as the name of a genus).

adjective

(of black-and-white photographic film) sensitive to all visible light except red. orthochromatic film can therefore be handled in red light in the darkroom but does not produce black-and-white tones that correspond very closely to the colours seen by the eye.

Usage examples:

Even the orthochromatic films were not sensitive to red light.

noun

A common rock-forming mineral occurring typically as white or pink crystals. it is a potassium-rich alkali feldspar and is used in ceramics and glass-making.

Usage examples:

Feldspars are added as orthoclase in order to reduce the devitrification of the glass.

noun

A radiographic image showing the exact size and shape of an organ, produced by orthodiagraphy or orthoroentgenography.

adjective

Of or relating to orthodiagraphy; performed by means of orthodiagraphy.

noun

In a monoclinic crystal: a dome with faces parallel to the orthodiagonal axis. compare "dome".

plural noun

The treatment of irregularities in the teeth and jaws.

Usage examples:

The branch of dentistry that specialises in aligning teeth is called orthodontics.

adjective

Relating to the job or activity of correcting the position of teeth and dealing with and preventing problems of the teeth

Usage examples:

Does she need orthodontic treatment to have her teeth straightened?, he has been impressed with res…