groundlaying noun 2adjective 1 noun2 •The creation of a foundation or base. •The first process in decorating by means of enamelled colour.If you don't have an airbrush this effect can be achieved by using a groundlaying technique over the doily, the oil being padded over both the doily and the plate. — 1987 adjective1 •Of, pertaining to, or supplying a foundation; foundational; fundamental.