1. Readily applicable or practical
   - applicative

See also: apply, practical

• order Cetacea
• order Charadriiformes
• order Charales
• order Chelonethida
• order Chelonia
• order Chiroptera
• order Chlorococcales
• order Chytridiales
• order Ciconiiformes
• order Cilioflagellata
• order Coccidia
• order code
• order Coleoptera
• order Collembola
• order Columbiformes
• order Colymbiformes
• order Commelinales
• order Coniferales
• order Conodonta
• order Conodontophorida
• order Coraciiformes
• order Cordaitales
• order Corrodentia
• order Crocodilia
• order Crocodylia