PERTURBATIVE
Meaning of PERTURBATIVE in English
/perr"teuhr bay'tiv, peuhr terr"beuh tiv/ , adj.
having a tendency to perturb; disturbing.
[ 1630-40; perturbativus. See PERTURBATION, -IVE ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012