creep stage characterized by strain rate (and creep rate) increasing with time (see: creep, creep rate, strain rate; compare: primary creep, secondary creep), roome kolmas staadium, mida iseloomustab moonekiiruse (ja roomekiiruse) suurenemine ajas (vt roome, roomekiirus, moonekiirus; vrd primaarroome, sekundaarroome)