a person who plans.
a book, similar to a desk calendar, for recording appointments, things to be done, etc.

1710–20; plan + -er1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
planner (ˈplænə)
1.  a person who makes plans, esp for the development of a town, building, etc
2.  a chart for recording future appointments, tasks, goals, etc

Collins English Dictionary - Complete & Unabridged 10th Edition
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Computing Dictionary

PLANNER definition

A language for writing theorem provers by Carl Hewitt MIT 1967. Never fully implemented.
CONNIVER was an outgrowth of PLANNER and microPLANNER a subset. PLASMA is a PLANNER-like system modelled on Actors. See also POPLER, QLISP, Scheme.
["PLANNER: A Language for Proving Theorems in Robots", Carl Hewitt, Proc IJCAI-69, Wash DC, May 1969].
The Free On-line Dictionary of Computing, © Denis Howe 2010
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Example sentences
It points up the dilemma of the emergency response planner.
The fossil record appears to be inconsistent such a perfect planner.
To a strategic planner's ear, no sweeter syllables existed.
Not every art exhibition doubles as a summer vacation planner.
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