neoplasia
noun
neo·pla·sia ˌnē-ə-ˈplā-zh(ē-)ə 
1
: the formation of tumors
2
: a tumorous condition
Example Sentences
Recent Examples on the Web At most 2 percent or less were diagnosed with neoplasia, or tumors. 
National Geographic, 6 July 2016
National Geographic, 6 July 2016 Word History
Etymology
probably borrowed from French néoplasie, from néo- neo- + -plasie -plasia
First Known Use
1871, in the meaning defined at sense 1
Medical Definition
neoplasia
noun
neo·pla·sia ˌnē-ə-ˈplā-zh(ē-)ə
1
: the process of tumor formation
2
: a tumorous condition of the body