basophil
noun
ba·so·phil ˈbā-sə-ˌfil 
-zə-
variants or less commonly basophile
ˈbā-sə-ˌfī(-ə)l
-zə-
: a basophilic substance or structure
especially : a white blood cell containing basophilic granules that is similar in function to a mast cell
Example Sentences
Recent Examples on the Web The antibodies hold onto white blood cells, called mast cells and basophils. 
Maureen Langley, Post-Tribune, 3 July 2018
Maureen Langley, Post-Tribune, 3 July 2018 Word History
Etymology
noun derivative of basophil, basophile "basophilic," borrowed from German basophil, from Base base entry 1 or basisch basic entry 1 + -o- -o- + -phil -phil entry 2
First Known Use
circa 1890, in the meaning defined above
Medical Definition
basophil
noun
ba·so·phil ˈbā-sə-ˌfil -zə-
-zə- variants also basophile
-ˌfīl
: a basophilic substance or structure
especially : a white blood cell with basophilic granules that is similar in function to a mast cell