kũũmĩrĩria

v.

1. to harden, strengthen. To harden. To gradually condition seedlings or plants to withstand environmental stress; to increase in strength or resistance.

Example: Kũũmĩrĩria gwikagwo atĩa na rĩ? (When is hardening done and how is it done?); Thikũ ithano mbere ya gũthamia mbeũ kuuma natharĩ-inĩ, ciotithie rĩua ndagĩka nini o mũthenya nĩguo cigĩe na ũkindĩrĩku na kũũmĩrĩria, ningĩ ũcoke ũcinyihĩrie maaĩ nĩguo imenyere na itigatangĩke ci... (Five (5) days before transplanting, gradually expose seedlings daily to strong sunlight and also reduce the water supply to lessen stress of the seedlings after transplanting); No harĩ oũguo, ũingĩ wa maaĩ harĩ mũmera ni ũbataranagĩa harĩ mũmera mathangũ maaĩngĩha na mutwe kũũmĩrĩria. (However, water requirement increases rapidly as complete canopy cover and head development occurs.)