dilate
Concise Oxford English Dictionary © 2008 Oxford University Press:
dilate /dʌɪˈleɪt, dɪ-/
▶verb
- 1 make or become wider, larger, or more open: her eyes dilated with horror.
- 2 (dilate on) speak or write at length on.
– derivatives
dilatable adjective,
dilation noun.
dilatable adjective,
dilation noun.
– origin ME: from OFr. dilater, from L. dilatare ‘spread out’.
'dilate' also found in these Oxford entries:

