Definition

A category in the classification of living things, which is one level above phylum and below domain, often referred to as kingdom.

Example

In biological classification, animals are grouped into different regna based on their characteristics.

Conversation

Did you know that the scientific classification of living things includes a level called regnum?

Really? I thought it just started with species and genus.

Nope, it goes all the way up to regnum, which is kind of like a kingdom.

That's interesting! I need to brush up on my biology.

Synonyms & Antonyms

Root Explanation

Regnum is derived from the Latin root "reg-" (meaning to rule) and the suffix "-num" (indicating a state or condition). Together, these parts convey the idea of a state or condition of rule, which is why regnum refers to a kingdom or realm.

Memory Tip

Think of 'ruling' ('reg-') over a 'state' ('-num') — that's how you remember that regnum means a kingdom or realm.

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