Abstract noun ending, 3 letters
Petula Clark song?, 15 letters
Any group or radical of the form RCO- where R is an organic group, 4 letters
An oral antiviral drug (trade name Zovirax) used to treat genital herpes, 9 letters
Does not cure the disease but relieves the symptoms, 9 letters
The process of introducing an acyl group into a compound, 9 letters
An ester of glycerol and fatty acids that occurs naturally as fats and fatty oils, 12 letters