x_{1} is the [probably spatial] linear momentum [vector] of x_{2} in frame of reference x_{3}

Three-vector. Technically, the word only implies a linear momentum; spatialness is perhaps implicit but should be specified in tanru for safety. See also: impetu, nejnimpetu, cnampetu, ocnerta.

- impetu
- x
_{1}is the momentum [vector] of x_{2}in frame of reference x_{3} - klaisirmpe
- x
_{1}measures to be x_{2}[li; number] kilogram-meters-per-second by standard x_{3}