syncope
Concise Oxford English Dictionary © 2008 Oxford University Press:
syncope /ˈsɪŋkəpi/
▶noun
- 1 Medicine temporary loss of consciousness caused by low blood pressure.
- 2 Grammar the omission of sounds or letters from within a word, for example when library is pronounced /ˈlʌɪbri/.
– derivatives
syncopal adjective.
syncopal adjective.
– origin ME: via late L. from Gk sunkopē, from sun- ‘together’ + koptein ‘strike, cut off’.
'syncope' also found in these Oxford entries:

