Erect comes from the Latin word erectus, meaning  âupright, elevated, loftyâ or âeager, alert, aroused.â Erect is a verb, as in, it will take you years to erect your replica of the Eiffel Tower using only gum and toothpicks. Erect is also an adjective, as in something that is tall, firm, straight or rigid, like a half-dead plant that becomes more erect when you water it.
mathematical - characterized by the exactness or precision of mathematics; mathematical precision. math, mathematics, maths - a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement.
Mathematics. 1  an investigation based on the properties of numbers. 2  the discussion of a problem by algebra, as opposed to geometry. 3  the branch of mathematics consisting of calculus and its higher developments. 4  a system of calculation, as combinatorial analysis or vector analysis.