English
Sealand
From sea + -land.
Formed from sea + -land
Proto-Germanic *saiwiz ‘sea, lake’
Proto-West Germanic *saiwi ‘body of water’
Old English sǣ
Middle English see ‘sea’
English sea
The story
In sense 3, calqued from Old Babylonian Akkadian 𒆳 𒀀𒀊𒁀 (Sumerogram KUR A.AB.BA, Akkadian: māt tâmti).
Today it means
name A self-proclaimed micronation (full name: the Principality of Sealand) whose capital is HM Fort Roughs, a former British sea fort.
Language periods are conventional ranges, not dates for this word.
Etymograph / Sealand