An alternative form of baroscopic; relating to observations made with a baroscope or based on atmospheric pressure measurements.
From baroscope + -ical (a variant of -ic, common in older scientific terminology). This longer form was preferred in 17th-18th century scientific writing.
The -ical ending was a status symbol in early modern science—longer adjectives sounded more authoritative, so 'baroscopical' was preferred to 'baroscopic' even though they meant exactly the same thing.
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