orthorhombic

"Any two diameters of a circle intersect each other at the centre."

"The student used a microscope to see the tiny cells in the plant leaf. "

"The meaning of the teacher's hand gesture was clear: "Pay attention." "

"The carpenter measured the lengths of the wooden boards before building the bookshelf. "

"My family has a different ideal for my future than I do. "

"He examined the crime scene for clues."

"The birds had built an amazing structure out of sticks and various discarded items."

"The boss treated Sarah like an unequal, giving her only the worst tasks. "

"The scientist studied the crystal structure of the salt. "

"The geologist found a beautiful mineral specimen in the rock collection. "

"The magician revealed the rabbit from under his hat, surprising the audience. "

"the defining power of an optical instrument"