diastereoisomer
Concise Oxford English Dictionary © 2008 Oxford University Press:
diastereoisomer /ˌdʌɪəstɛrɪəʊˈʌɪsəmə/
▶noun Chemistry each of a pair of stereoisomeric compounds that are not mirror images of one another.
– derivatives
diastereoisomeric adjective.
diastereoisomeric adjective.
'diastereoisomer' also found in these Oxford entries:

