Regnum, plural Regna uv Omneeonizm uv Omneeoh.

Pronunciation
(UK) IPA(key): /ˈɹɛɡ.nəm/

Etymology
From Latin rēgnum (“kingdom”). Doublet of reign.

Kingdom in Funetik Inglish iz Keengdum

In Omneeonizm, Keengdum iz reeplaeest with the wrd Regnum.
-ref: https://en.wikipedia.org/wiki/Kingdom_(biology)

kingdom in a Medical Dictionary [king´dum]
1. in the classification of living organisms, the highest of the categories; the most widely used classification system lists five kingdoms: monera, protista, fungi, Planta (the plants), and Animalia (the animals).
2. traditionally, one of three major categories into which natural objects may be classified, consisting of the animal, plant, and mineral kingdoms.

See also:

In Omneeonizm, Regnum iz eewzd insted uv Kingdom in the Natural Sciences uv Physics and Biology

See: Regna (plural uv Regnum)