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expansion card
expansion draft
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expatiate

ex·pa·ti·ate [ ek spáyshee àyt ] (past and past participle ex·pa·ti·at·ed, present participle ex·pa·ti·at·ing, 3rd person present singular ex·pa·ti·ates)


intransitive verb 
Definition:
 
1. speak or write at length: to speak or write about something at length
We had to listen to him expatiating on the shortcomings of our system.

2. wander: to wander or roam at will ( archaic )

[Mid-16th century. < Latin ex(s)patiat-, past participle of ex(s)patiari "walk out" < spatiari "walk" < spatium "space"]

ex·pa·ti·a·tion [ ek spàyshee áysh'n ] noun
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