Rex regis, meaning king, and cado cadere cecidi casum, meaning die.
Regicide means to kill a king.---These words typically derive from Latin roots. The Latin for prince is princeps which suggests that a word for killing a prince or for the person that kills a prince could be, say, 'princepicide'. However, google searches for this yield no results, suggesting that there is no usage of it other than the one that declares that it should be a word.
"Calorie" is not a Latin word, though it has Latin roots: it is from the word calor, meaning "heat."
The Latin word for 'roots' is the noun radices. The noun is feminine gender, in the plural form. The singular form is 'radix'.
The man committed regicide.
It's English. But it has Latin roots.
A murderer; traitor; assassin; treason
milli
Regicide is developed from two Latin base words: essentially regal or royal, and -cide, to kill. Regicidemeans killing a monarch.
The word "medium" has Latin etymological roots. The word comes from the Latin word "medius" which meant intermediate or middle.
Ad and parere are the Latin roots of 'apparition'. The preposition 'ad' is the Latin equivalent of 'to, toward'. The infinitive 'parere' is the Latin equivalent of 'to come into view'.
The word "penumbra" has two Latin roots, paene ("almost") and umbra ("shadow").
regicide