What is the meaning of -ida?

Now used principally to form taxonomic names at the ranks of class and order and ranks formed by prefixes applied to class and order, often originating as names of orders

Reflexive verb ending.

Romanization of -𐌹𐌳𐌰

-ide

  1. Any of a group of related compounds - azide, polysaccharide, glycoside.
  2. A binary compound - bromide, arsenide, palladide.

Any of a group of related compounds - azide, polysaccharide, glycoside.

A binary compound - bromide, arsenide, palladide.

used to form abstract nouns from adjectives

-ide

feminine singular of -ido

Source: wiktionary.org