# reckoning

A reckoning is a calculation or number you estimate. You might say, “By my reckoning, there are now seventeen kids in the bouncy house, which might be a few too many.”

The act of counting or tallying can be called a reckoning, and so can a person’s opinion on something. You could describe an ancient astronomer’s reckoning that the Earth was at the center of the universe or your own reckoning that guests should never stay more than three days. And if you and your estranged sister have a reckoning, it means you finally get together and hold each other accountable for past actions.

Definitions of reckoning
1. noun

problem solving that involves numbers or quantities

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extrapolation

(mathematics) calculation of the value of a function outside the range of known values
interpolation

(mathematics) calculation of the value of a function between the values already known
conversion

a change in the units or form of an expression: “conversion from Fahrenheit to Centigrade”
approximation, estimate, estimation, idea

an approximate calculation of quantity or degree or worth
derivative, derived function, differential, differential coefficient, first derivative

the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx
integral

the result of a mathematical integration; F(x) is the integral of f(x) if dF/dx = f(x)
scalage

estimation of the amount of lumber in a log
curvature

the rate of change (at a point) of the angle between a curve and a tangent to the curve
data conversion

conversion from one way of encoding data to another way
digitisation, digitization

credit, credit rating

an estimate, based on previous dealings, of a person’s or an organization’s ability to fulfill their financial commitments
dead reckoning, guess, guessing, guesswork, shot

an estimate based on little or no information
guesstimate, guestimate

an estimate that combines reasoning with guessing
overestimate, overestimation, overrating, overreckoning

a calculation that results in an estimate that is too high
underestimate, underestimation, underrating, underreckoning

an estimation that is too low; an estimate that is less than the true or actual value
partial, partial derivative

the derivative of a function of two or more variables with respect to a single variable while the other variables are considered to be constant
indefinite integral

the set of functions F(x) + C, where C is any real number, such that F(x) is the integral of f(x)
definite integral

the integral of a function over a definite interval
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problem solving

the thought processes involved in solving a problem

2. noun

the act of counting; reciting numbers in ascending order

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blood count

the act of estimating the number of red and white corpuscles in a blood sample
census, nose count, nosecount

a periodic count of the population
countdown

counting backward from an arbitrary number to indicate the time remaining before some event (such as launching a space vehicle)
miscount

an inaccurate count
poll

the counting of votes (as in an election)
recount

an additional (usually a second) count; especially of the votes in a close election
sperm count

the act of estimating the number of spermatozoa in an ejaculate
CBC, blood profile, complete blood count

counting the number of white and red blood cells and the number of platelets in 1 cubic millimeter of blood
differential blood count

counting the number of specific types of white blood cells found in 1 cubic millimeter of blood; may be included as part of a complete blood count
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investigating, investigation

the work of inquiring into something thoroughly and systematically

3. noun

a personal belief or judgment that is not founded on proof or certainty

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idea

a personal view
judgement, judgment, mind

an opinion formed by judging something
eyes

opinion or judgment
parti pris, preconceived idea, preconceived notion, preconceived opinion, preconception, prepossession

an opinion formed beforehand without adequate evidence
pole

one of two divergent or mutually exclusive opinions
political sympathies, politics

the opinion you hold with respect to political questions
conclusion, decision, determination

a position or opinion or judgment reached after consideration
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belief

any cognitive content held as true

4. noun

a bill for an amount due

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tally

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account, bill, invoice

an itemized statement of money owed for goods or services

5. noun

a time or act of being held accountable; a settling of accounts

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