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Webster 1913 Edition
Tithymal
Tith′y-mal
,Noun.
 [L. 
tithymalus 
a plant with a milklike sap, Gr. [GREEK]: cf. F. tithymale
.] (Bot.) 
Any kind of spurge, esp. 
Euphorbia Cyparissias
. Webster 1828 Edition
Tithymal
TITH'YMAL
,Noun.