'persistent and pathological high blood pressure for which no specific cause can be found' yw'r diffiniad yn http://www.wordreference.com/definition/essential+hypertension
 
Gorbwysedd (cyson d)diachos? (Yn Gyr A, causeless = diachos)
 
Berwyn
 
----- Original Message -----
From: "Sian Roberts" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, July 08, 2005 1:51 PM
Subject: essential hypertension

"In over nine out of every ten people there is no definite cause of high
blood pressure.  This condition is known as 'essential hypertension'."

A oes rhywun yn gwybod a oes term Cymraeg?
O edrych yn dictionary.com, mae i "essential" yn y cyd-destun hwn ei
ddiffiniad ei hunan - h.y. dyw e ddim yr un peth ā "hanfodol" etc.

Diolch
Siān



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