| Words | Parts of Speech | Meaning/Definition/Similar Words |
|---|---|---|
| dyad | noun | Two units treated as one; a couple; a pair., An element, atom, or radical having a valence or combining power of two., Having a valence or combining power of two; capable of being substituted for, combined with, or replaced by, two atoms of hydrogen; as, oxygen and calcium are dyad elements. See Valence. |
| dyas | noun | A name applied in Germany to the Permian formation, there consisting of two principal groups. |
| dyed | imp. & past participle | of Dye |
| dyer | noun | One whose occupation is to dye cloth and the like. |
| dyke | noun | See Dike. The spelling dyke is restricted by some to the geological meaning. |
| dyne | noun | The unit of force, in the C. G. S. (Centimeter Gram Second) system of physical units; that is, the force which, acting on a gram for a second, generates a velocity of a centimeter per second. |
| dys- | An inseparable prefix, fr. the Greek / hard, ill, and signifying ill, bad, hard, difficult, and the like; cf. the prefixes, Skr. dus-, Goth. tuz-, OHG. zur-, G. zer-, AS. to-, Icel. tor-, Ir. do-. |