List: rare term

rare term  noun  noun (generic) 

• helper cell, helper T cell

rare term  abbreviation  Christianity  noun  noun (generic) 

• Annunciation

rare term  noun  noun (generic) 

• alkyne

rare term  noun  noun (generic) 

• alkene, olefin, olefine

rare term  noun  noun (generic) 

• arsine

rare term  noun  noun (generic) 

• alkane

rare term  noun  noun (generic) 

• oxygenase

rare term  noun  noun (generic) 

• bromide paper

rare term  noun  noun (generic) 

• gallium arsenide (GaAs)

rare term  noun  noun (generic) 

• arsenic trioxide, white arsenic (As2O3)