exacting

adj 1: (microbiology) having complicated nutritional requirements;

especially growing only in special artificial

cultures; "fastidious microorganisms"; "certain highly

specialized xerophytes are extremely exacting in their

requirements" [syn: {fastidious}] [ant: {unfastidious}]

2: severe and unremitting in making demands; "an exacting

instructor"; "a stern disciplinarian"; "strict standards"

[syn: {stern}, {strict}]

3: requiring precise accuracy; "an exacting job"; "became more

exigent over his pronunciation" [syn: {exigent}]