https://everything2.com/title/Metacentre
Met`a*cen"ter (?) or -tre, n. [Pref. meta- + center.] Hydrostatics The point of intersection of a vertical line through the center of gravity of the...
metacentre
https://support.metacentre.eu/portal/en/kb/articles/metacentre-sx-factsheet
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metacentresxfactsheet