different between polytype vs parachrysotile

English

Etymology

poly- +? type

Noun

polytype (plural polytypes)

1. Any of the types involved in polytypism.

2. A cast, or facsimile copy, of an engraved block, matter in type, etc.
   • 1825, Thomas Curson Hansard, Typographia, an Historical Sketch of the Origin and Progress of the Art of Printing

     Towards the end of the eighteenth century , Professor Wilson of Glasgow , being engaged in a series of experiments for making etchings upon glass with fluoric acid for the purposes of art , thought it possible to make polytypes of glass from engraved copperplates

3. (computing theory) In the Hindley–Milner type system, a data type containing variables bound by one or more ? (for-all) quantifiers.

   Coordinate term: monotype

Verb

polytype (third-person singular simple present polytypes, present participle polytyping, simple past and past participle polytyped)

1. (transitive) To produce a polytype of.

   to polytype an engraving

French

Pronunciation

• Homophones: polytypent, polytypes

Verb

polytype

1. first-person singular present indicative of polytyper
2. third-person singular present indicative of polytyper
3. first-person singular present subjunctive of polytyper
4. third-person singular present subjunctive of polytyper
5. second-person singular imperative of polytyper

English

Etymology

para- +? chrysotile

Noun

parachrysotile (countable and uncountable, plural parachrysotiles)

1. (mineralogy) An orthorhombic polytype of chrysotile.

Further reading

• David Barthelmy (1997–2021) , “Parachrysotile”, in Webmineral Mineralogy Database
• “parachrysotile”, in Mindat.org?^[1], Hudson Institute of Mineralogy, 2000–2021.