Adjective
Of or pertaining to measure.
Source: Webster's dictionaryHowever, this makes the first definitely identifiable scholar to accept and explain the mensural system to be de Muris, who can be said to have done for it what Garlandia did for the rhythmic modes. Source: Internet
Dotted notes were never used in this way in the mensural period; the main beat unit was always a simple (undotted) note value. Source: Internet
Early music usage Mensural time signatures In the 14th, 15th and 16th centuries, a period in which mensural notation was used, four basic mensuration signs determined the proportion between the two main units of rhythm. Source: Internet