diffuserdiffusiondiffusion blockdiffusion coefficientdiffusion equationdiffusion of gassesdiffusion pumpdiffusivitydigestiondigestion compartmentdigestion tankdigging cycledigital photogrammetrydikedilatancydilatantdilatationdilatation jointdilatational wavedilating pressuredilationdilutedilutentdiluviumdimensiondimension stonedimensional analysisdimensional homogeneitydimensional inaccuracydimensional stabilitydimensionlessdimensionless curvedimensionless hydrographdimensionless quantitydimensionless ratiodimensionless variabledimple springdining roomdioritedipdip of beddipper stickdirectdirect analoguedirect compressive stiffnessdirect connected pumpdirect connectiondirect costdirect currentdirect cyclic stress