Solidly and thoroughly booked; fully scheduled with no free breaks or space; unavailable.

A chemical compound that is solid. / (grammar) A compound word with no spaces or hyphens in it, such as dishcloth, keyboard, or pancake.

plural of solid compound

plural of solid phase

plural of solid emulsion

plural of solid slug

plural of solid solution

plural of solid sol

plural of solid shot

The solid phase of hydrogen; frozen hydrogen state / Synonym of metal hydride / A metal lattice which has absorbed hydrogen gas / Used other than figuratively or idiomatically: see solid, hydrogen.