PCAT

n. white crystalline compound used to make glass

n. condition where a healthy person worries excessively that they are ill?

n. group of antibiotics; originally made from mould

pref. small

n. a combination of reacting particles (atoms; molecules or ions) when they are at the top of the activation energy barrier between the products and the reactants?

n. motor neuron?

adj. relating to the last section of the large intestine which ends at the anus

n. charged atom or molecule?

n. malleus

n. fleshy tissue at the back of the throat