h 4 y 4 p 3 e 1 r 1 p 3 i 1 t 1 u 1 i 1 t 1 a 1 r 1 i 1 s 1 m 3
16 letters · 28 points in Scrabble
Meaning
noun excessive activity of the pituitary gland (especially overactivity of the anterior lobe which leads to excess secretion of growth hormone)
originFrom hyper- + pituitary + -ism.
Etymology from Wiktionary, CC BY-SA 3.0