and/or

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and/or

A conjunction indicating an option or possibility of both things listed ("and") or either thing listed ("or"). Come on, we need to celebrate a little bit! Can't we at least have cake and/or ice cream in honor of your birthday?
See also: and
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

and/or

Both or either of two options. For example, His use of copyrighted material shows that the writer is careless and/or dishonest. This idiom originated in legal terminology of the mid-1800s.
See also: and
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
See also:
References in periodicals archive ?
The next section deals with the representation of sign gestures using And-Or trees, Section 3 discuss the correctness of the representation.
The proposed approach represent the sign gesture using And-Or tree.
The next section discusses the correctness of And-Or representation of sign gesture and also proposes the ideal representation of the tree for various sign gestures possibility.
This section gives an overview of constructing the And-Or tree from the basic sign phonemes.
It can represented by a single left or right And-Or tree depending on the selection of hand.
"It appears that the suspect had been kicked out of the programme three years prior and during the past few weeks had sent different forms of hate mail to the programme and-or its director," police said.
The board agreed that Marlow RFC and-or Wasps be paid compensation of up to pounds 1,000.'
The evaluation of the logic-based architecture specification is similar to a depth first search of an AND-OR tree [3, 7], where AND nodes represent the predicates within a clause body, and OR nodes represent the clauses unifiable with a calling predicate.
As a result, their approach has to explicitly handle the backtracking problem during the parallel evaluation of the AND-OR tree.
Specifically, the new evaluation model extracts the necessary mode information from the static data dependency analysis to facilitate the combination of top-down and bottom-up searching of the AND-OR tree of a logic-based architecture specification.
Hybrid AND-OR parallel evaluation model: This AND-OR parallel model uses information gathered statically and the user's input to find the largest number of the predicates that can be evaluated in parallel.