magnality
A great or wonderful thing; a marvel.
dated
The exiguity and ſmallneſſe of ſome ſeeds extending to large productions is one of the magnalities of nature, ſomewhat illuſtrating the work of the Creation, and vaſt production from nothing.
Where it comes from
From Latin magnāle (“mighty work or deed”) (from magnus (“big, large; great; important”), ultimately from Proto-Indo-European *m̥ǵh₂nós, from *méǵh₂s (“big, great”)) + -ity.
Adapted from the Wiktionary entry magnality (CC BY-SA 4.0).