The quality or state of being communicable; the capacity to be shared or transmitted.
From 'communicable' plus -ness (English suffix for abstract nouns). This is a somewhat archaic or formal alternative to 'communicability.'
English lets you form abstract nouns multiple ways—'communicability' and 'communicableness' mean the same thing, but -ity sounds more scientific while -ness sounds more literary, showing how suffixes carry subtle tone.
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