Yes, coordinate is playable
...and is worth 15 points.
Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Coordinate" Definition
noun
A set of articles, as of clothing or luggage, designed to match or complement one other, as in style or color.
Informal Directions: Give me some coordinates so I can find my way.
Mathematics Any of a set of two or more numbers used to determine the position of a point, line, curve, or plane in a space of a given dimension with respect to a system of lines or other fixed references.
Of or relating to a university in which men and women are taught by the same faculty but in single-sex classes or on single-sex campuses.
One that is equal in importance, rank, or degree.
adjective
Grammar Having equal syntactic status: coordinate phrases.
Of equal importance, rank, or degree: coordinate offices of a business.
Of or based on a system of coordinates.
Of or involving coordination.
Equal in rank, quality, or significance.
verb-intransitive
Grammar To link (syntactically equivalent units) together.
To be coordinate: The generators coordinate so that one is always running.
To form a pleasing combination; match: shoes that coordinate with the rest of the outfit.
To work together harmoniously: a nursing staff that coordinates smoothly.
verb-transitive
To harmonize in a common action or effort: coordinating the moving parts of a machine; coordinate the colors of a design.
To place in the same order, class, or rank.
verb
To put in the same order or rank.
To bring into a common action, movement, or condition .
To attach so as to form a complex.
To be or become coordinate especially so as to act together in a smooth concerted way.
To combine by means of a coordinate bond.