There's something about the word 'dilation' that makes me irrationally uncomfortable; it suggests a widening, a swelling, an engorging of bodily fluids to facilitate the smooth passage of something into, or out of, the human body.   

There's something about the word 'dilation' that makes me irrationally uncomfortable; it suggests a widening, a swelling, an engorging of bodily fluids to facilitate the smooth passage of something into, or...