antineoplastic
adjective
an·ti·neo·plas·tic ˌan-tē-ˌnē-ə-ˈpla-stik 
ˌan-ˌtī-
ˌan-ˌtī- : inhibiting or preventing the growth and spread of tumors or malignant cells
Word History
First Known Use
1898, in the meaning defined above
Medical Definition
antineoplastic 1 of 2
adjective
an·ti·neo·plas·tic -ˌnē-ə-ˈplas-tik
: inhibiting or preventing the growth and spread of neoplasms or malignant cells
treated with a regimen of antineoplastic drugs
antineoplastic
2 of 2noun
: an antineoplastic agent