Noun

(wikipedia ozone) (-)

(chemistry) An allotrope of oxygen (symbol O₃) having three atoms in the molecule instead of the usual two; it is a blue gas, generated from oxygen by electrical discharge.

(from an erroneous former belief that seaweed contains and releases ozone) Fresh air, especially that breathed at the seaside and smelling of seaweed.

* 1875 , (William Crookes), The Chemical News , page 99,

A patent obtained in England, and specified far from clearly, for obtaining ozone' by boiling seaweed,†† may be mentioned as a curiosity, and also the credulity with which ' ozone -baths, prepared in this manner, find a ready sale, in spite of, or perhaps rather on account of, their high price.

* 1888 , L. T. Meade, A. Balfour Symington, Edwin Oliver, , Volume 1, page 674,

To Ramsgate baths she sped, in quest / Of seaweed and ozone' ; / For seaweed and ' ozone were best, / They said, to give her tone.

* 2007 , Robert Douglas, Tales of the Unexpected'', ''Somewhere to Lay My Head , unnumbered page,

It's got the lot: fresh sea air, ozone , seaweed. You could cut the air with a knife.

Noun

(en noun)

The absolute height of a location, usually measured from sea level.

* {{quote-magazine, date=2013-06-07, author=David Simpson

, volume=188, issue=26, page=36, magazine=(The Guardian Weekly) , title= Fantasy of navigation , passage=Like most human activities, ballooning has sponsored heroes and hucksters and a good deal in between. For every dedicated scientist patiently recording atmospheric pressure and wind speed while shivering at high altitudes , there is a carnival barker with a bevy of pretty girls willing to dangle from a basket or parachute down to earth.}}

A vertical distance.

(geometry) The distance measured perpendicularly from a figure's vertex to the opposite side of the vertex.

(astronomy) The angular distance of a heavenly body above our Earth's horizon.

Height of rank or excellence; superiority.

(Jonathan Swift)

(dated, in the plural) Elevation of spirits; heroics; haughty airs.

* Sir Walter Scott

The man of law began to get into his altitudes .

(Richardson)

Highest point or degree.

* Shakespeare

He is [proud] even to the altitude of his virtue.