I'm not sure about your answer, Nigh Queen! But it was meaning Women's Auxiliary Army Crops!
W = Women
A = Auxiliary
A = Army
C = Crops
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Okay, I've checked this meaning in Medicine Health website! Cause I didn't know the answer for your word Rheumatoid arthritis.
Rheumatoid arthritis, often called RA, is a chronic (long-standing) disease that damages and eventually destroys the joints of the body. The damage is caused by inflammation, a normal response of the body’s immune system. Arthritis means “joint inflammation.”
That's a new thing I've learned today! Thank you Night Queen!!
What's the meaning of Diabetes! It's specially for you Night Queen! cause you know about medical things and the things in the medical region.