What does caroli mean?
Caroli is best understood not as a standalone English word but as a Latin form that survives inside English-language scientific writing. It is the genitive, or possessive, case of Carolus, the Latin rendering of the name Charles, so it literally means 'of Charles' or 'belonging to Carolus'. Its principal modern habitat is biological nomenclature: when a new plant or animal is named to honour someone called Charles or Carlo — a monarch, a naturalist, a patron — the species epithet caroli may be chosen, as in various species across botany and zoology. Because taxonomic names are treated as Latin, caroli stays lowercase even when commemorating a proper name, and it never declines further within the species name. Outside taxonomy and other learned Latinate contexts the form is essentially unused, so readers encountering it can usually assume a commemorative dedication to some historical Charles lies behind it. Recognising this small piece of Latin unlocks a whole layer of meaning hidden in the world's scientific names.
nounCaroli is the Latin genitive (possessive) form of Carolus, meaning 'of Carolus' or 'of Charles'. It appears chiefly in scientific taxonomy as the second element of a binomial species name, honouring a person whose name was or derives from Carolus.
- As a taxonomic epithet, the Latin genitive of Carolus, meaning 'of Charles' or 'of a person named Carolus', used in binomial species names to honour such a person.
"The beetle species Carabus caroli was named in honour of the nineteenth-century collector Charles Dupont."
"Ornithologists recognised the hummingbird subspecies by its epithet caroli, honouring the naturalist Charles Bonaparte's circle of collaborators."
"In botanical Latin, caroli simply means 'of Charles', so a plant named after King Charles I carries that epithet."
Every time you read a species name ending in caroli, Latin is quietly saying 'belonging to a Charles' — botanists and zoologists have been immortalising men named Charles this way for centuries.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of caroli
Caroli derives from Carolus, the Latinised form of the Germanic name Karl, which entered Latin as the name of Charlemagne (Carolus Magnus) and became the standard Latin equivalent of Charles. The form caroli is simply its genitive singular, the case Latin uses to express possession or dedication. Through Carolus the root also underlies feminine and adjectival derivatives such as Caroline, Carolina, Charlotte and Charlene, which spread across European languages. In scientific naming, botanists and zoologists borrowed this classical genitive directly, following the tradition of constructing species epithets from personal names.
How caroli is actually used
Caroli is not an independent English word but a Latin grammatical form. It occurs almost entirely within scientific names of organisms and other formal Latin phrases; using it outside these contexts would be unusual. In taxonomy it is conventionally lowercase regardless of the person honoured.
Easily confused with caroli
Charlie is a familiar English nickname for Charles, whereas caroli is the Latin possessive form of Carolus used almost exclusively in formal taxonomic naming.