The state or quality of being bilateral; having or affecting two sides.
Formed from 'bilateral' (from Latin 'bi-' two + 'lateralis' of the side) with the noun-forming suffix '-ness', creating an alternative to 'bilaterality' with Germanic roots.
While 'bilaterality' sounds more formal and scientific, 'bilateralness' is the Anglo-Saxon alternative—showing how English often gives us multiple ways to express the same idea depending on whether we want to sound academic or straightforward.
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