A guess towards a possible estimation of some sought.
My guesstimation will be for another 3 hours of driving.
by gaetano October 8, 2007
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An educated guess. A guesstimation is a guess, but at the same time an estimation.
I guesstimated that 95% of people in Zimbabwe think this word is cool.
by drew s April 9, 2004
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a mix between guessing and estimating.

guess + estimate = guesstimate

its that simple.
me (looking at very confusing non-digital watch without any numbers): I guesstimate that it is about 3:06ish.
by isabelle.g.p33 May 23, 2011
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The way stupid people say "estimate". They either think they're being cute or clever, or else that it's an actual word. Since it's not any of these, science has yet to offer an explanation for people who consider use of this word acceptable.
My college trig teacher asked us to "guesstimate" values. I wanted to punch her in the mouth.
by mamamooa October 19, 2005
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an aproximation; an annoying phrase likely originating from high school science teachers.
Don't know the answer? Make a guesstimate.
by vurp May 1, 2003
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A combination of Guessing and Estimating you find the guesstimate by:
1. Guess
2. Estimate
3. Find the difference between the two.
4. Add them up
5. Divide by two
6. Plus 17
7. Subtract two
ALL DONE
YAY! I solved the problem by using the Guesstimate Strategy!
by Grace October 9, 2003
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