different between mesotype vs melotype

English

meso- +? -type: compare French mésotype.

mesotype (plural mesotypes)

(mineralogy, obsolete) Any of various minerals, including natrolite (soda mesotype), scolecite (lime mesotype), and mesolite (lime-soda mesotype)
Any moth of the genus Mesotype

melotype (plural melotypes)

(photography) A picture produced by a process in which development after exposure may be deferred indefinitely, so as to permit transportation of exposed plates.

Send