| 释义 |
sys·tem·ic
I. \sə̇ˈstemik, -mēk\ adjective
Etymology: system + -ic
: of, relating to, or common to a system: as
a. : affecting the body generally — distinguished from local
< systemic death >
< systemic wilt in plants >
b. : supplying those parts of the body that receive blood through the aorta rather than the pulmonary artery
c. : being a pesticide which as used is harmless to a plant or higher animal but when absorbed into the sap or blood stream makes the whole organism toxic to pests (as aphids, mites, or cattle grubs)
II. noun
(-s)
: a systemic pesticide |