Fundamental 

The very basic or more simplistic form /version that can make up something of a larger and more complex structure/format/design/ect.

The fundamental forms of an equation.
The fundamental frame work for a building.
The fundamental aspects that make something what it is.

Fundamental by Megahotdragon August 31, 2009

fundamental 

meaning radicalness or awsomeness

no F**king way thats fundamental

fundamental by Dub "james" schwan November 17, 2002

Fundamental Knobhead 

Term created by Joe Lycett.
Used to describe an absolute idiot. Someone who is too bad to just use the word knobhead.

Larry: That bloke over there is a fundamental knobhead!

Fundamental Knobhead by back_from_whence June 26, 2018

Fundamental Attribution Error 

When a problem with a person is really a problem with the situation.
We tend to attribute people’s behavior to their core character rather than to their situation. It's the Situation, Not the Person.

“What a jerk!... see how he drives!”
“Fundamental Attribution Error honey, I wonder the situation he’s in that’s causing him to drive so crazy.”

"What do you mean?"
"He is the doctor in charge of emergency at the hospital few blocks away... don´t you remember?"

Fundamental Attribution Error by rperazag June 10, 2010

Fundamental Theorem of Arithmetic 

The fundamental theorem of arithmetic states that {n: n is an element of N > 1} (the set of natural numbers, or positive integers, except the number 1) can be represented uniquely apart from rearrangement as the product of one or more prime numbers (a positive integer that's divisible only by 1 and itself). This theorem is also called the unique factorization theorem and is a corollary to Euclid's first theorem, or Euclid's principle, which states that if p is a prime number and p/ab is given (a does not equal 0; b does not equal 0), then p is divisible by a or p is divisible by b.

Proof: First prove that every integer n > 1 can be written as a product of primes by using inductive reasoning. Let n = 2. Since 2 is prime, n is a product of primes. Suppose n > 2, and the above proposition is true for N < n. If n is prime, then n is a product of primes. If n is composite, then n = ab, where a < n and b < n. Therefore, a and b are products of primes. Hence, n = ab is also a product of primes. Since that has been established, we can now prove that such a product is unique (except for order). Suppose n = p sub1 * p sub2 * ... * p subk = q sub1 * q sub2 * ... * q subr, where the p's and q's are primes. If so, then p sub1 is divisible by (q sub1 * ... * q subr) by Euclid's first theorem. What is the relationship between p sub1 and one of the q's? If the r in q subr equals 1, then p sub1 = q sub1 since the only divisors of q are + or - 1 and + or - q and p > 1, making p = q. What about the other factors in the divisor? If p does not divide q, then the greatest common denominator of p and q is 1 since the only divisors of p are + or - 1 and + or - p. Thus there are integers m and n so that 1 = am + bn. Multiplying by q subr yieds q subr = amq subr + bnq subr. Since we are saying that p is divisible by q, let's say the q sub1 * q subr = cp. Then q subr = amq subr + bnq subr = amq subr + bcm = m(aq subr + bc). Therefore, p is divisible by q sub1 of q sub2 * ... * q subr. If p sub1 is divisible by q sub1, then p sub1 = q sub 1. If this does not work the first time, then repeat the argument until you find an equality. Therefore, one of the p's must equal one of the q's. In any case, rearrange the q's so that p sub1 = q sub1, then p sub1 * p sub2 * ... * p subk= p sub1 * q sub2 * ... * q subr and p sub2 * ... * p subk = q sub2 * ... * q subr, and so on. By the same argument, we can rearrange the remaining q's so that p sub2 = q sub2. Thus n can be expressed uniquely as a product of primes regardless of order, making the fundamental theorem of arithmetic true.

Fundamental Theorem of Arithmetic by some punk kid September 6, 2005

fundamental orifice

A 'polite' term for the male or female anus. See puckered rosebud

I say! You! You Hugh! Hugh Grant, you're a bit of a, that is if you don't mind my observing, if it's not too much trouble etc you're something of a fundamental orifice you old stick you!

fundamental orifice by Mark November 24, 2003

fundamental idiot 

A dumb group of kids who have no life

Me-I have no life

Kid-then your a fundamental idiot

fundamental idiot by A Duke chicken that is drunk May 9, 2019