In terms of balance; considering balance or equilibrium as the primary concern.
From 'balance' plus the suffix '-wise' (meaning 'in the manner of' or 'with respect to'). The suffix '-wise' has Old English roots and remains productive in modern English for creating adverbs.
The suffix '-wise' is having a comeback—people say 'moneywise' and 'weatherwise' in modern English, and grammarians hate it, but it's actually following a pattern that's been in English for over a thousand years.
Complete word intelligence in one call. Free tier — 50 lookups/day.