Present participle of englobe; the act of enclosing or surrounding completely; forming into a globe.
From englobe + -ing (Old English -ing, the infinitive marker that became the participle suffix). This is one of English's most ancient and productive suffixes.
The -ing suffix is a marvel of efficiency—add it to almost any verb and you get a noun or participle: 'running,' 'walking,' 'thinking.' Medieval writers would have found 'englobing' perfectly natural, though we find it archaic today.
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