He was distinguished principally in his mastery and improvement of the clock and chronograph, above all of the marine chronometer, in which he carried forward the pioneering work of John Harrison.

It is distinguished principally by a large library and, on the third floor, a long auditorium with rusticated plaster work in imitation of stone and a coffered ceiling.

It was a world view shared by everyone, distinguished principally by its complete ignorance of the world.

Just as there are many different crystalline forms of ice (currently fifteen known), there are also different forms of amorphous ice, distinguished principally by their densities.

He was principally distinguished for his busts and portrait statues.

Grammatical inference is distinguished from traditional decision rules and other such methods principally by the nature of the resulting model, which in the case of grammatical inference relies heavily on hierarchical substitutions.

The genus is closely allied to Senecio and can be distinguished principally by details of the involucre.

He was 'distinguished principally for his want of memory, and his title of recorder was converted into the nickname of the Obliviscor (forgetter) of London'.

Defined in this way, libertarian socialism in the contemporary political mainstream is distinguished from modern social democracy and democratic socialism principally by its political decentralism rather than by its economics.

Lepidoptera are distinguished from other orders principally by the presence of scales on the external parts of the body and appendages, especially the wings.