What does cyanellus mean in Latin?

cyanellus, a adjective, means “Somewhat green”.

How do you pronounce cyanellus?

In classical Latin, [ky.aˈnɛl.lʊs]; in ecclesiastical (church) Latin, [t͡ʃi.aˈnɛl.lus].

adjectivefirst/second-declension adjective

cyanellus (feminine cyanella, neuter cyanellum)

Classical[ky.aˈnɛl.lʊs]Ecclesiastical[t͡ʃi.aˈnɛl.lus]

singular
form	masculine	feminine	neuter
nominative	cyanellus	cyanella	cyanellum
genitive	cyanellī	cyanellae	cyanellī
dative	cyanellō	cyanellae	cyanellō
accusative	cyanellum	cyanellam	cyanellum
ablative	cyanellō	cyanellā	cyanellō
vocative	cyanelle	cyanella	cyanellum

plural
form	masculine	feminine	neuter
nominative	cyanellī	cyanellae	cyanella
genitive	cyanellōrum	cyanellārum	cyanellōrum
dative	cyanellīs	cyanellīs	cyanellīs
accusative	cyanellōs	cyanellās	cyanella
ablative	cyanellīs	cyanellīs	cyanellīs
vocative	cyanellī	cyanellae	cyanella

From a diminutive of cyanus.