Cicero is a unit of length.
Cord
(Units Package Symbol) Cord is a unit of volume.
Coulomb is the derived SI unit of electric charge.
Cubit
(Units Package Symbol) Cubit is a unit of length.
Curie
(Units Package Symbol) Curie is a unit of radioactivity.
Dalton is a unit of mass.
Decade is a unit of time.
Didot
(Units Package Symbol) Didot is a unit of length.
DidotPoint is a unit of length.
Diopter is a unit of inverse length.