(mechanical engineering) Initialism of reinforced concrete pipe. / (software) Initialism of rich client platform.

glacial drift consisting of a mixture of clay, sand, pebbles and boulders / (dialect) manure or other material used to fertilize land

plural of dynamotype

The act of attending; the state of being present; presence. / The persons or number of persons present. / The frequency with which one has been present for a regular activity or set of events.