[ adjective ] giving and careful attention to detail; hard to please; excessively concerned with cleanliness
"a fastidious and incisive intellect" "fastidious about personal cleanliness"
Used in print(LeRoy Fothergill, "Biological Warfare", in Peter...)
Moreover , it should not be so fastidious in its growth requirements as to make production on a militarily significant scale improbable .
[ adjective ] (microbiology) having complicated nutritional requirements; especially growing only in special artificial cultures
"fastidious microorganisms" "certain highly specialized xerophytes are extremely exacting in their requirements"