plural modalities
Definition of modality
2
: the classification of logical propositions (see proposition sense 1) according to their asserting or denying the possibility, impossibility, contingency, or necessity of their content
3
: one of the main avenues of sensation (such as vision)
4
: a usually physical therapeutic agency
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Merriam-Webster unabridged
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Time Traveler for modality
The first known use of modality was in 1545
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