Yes, macro is a Scrabble word!
...and is worth 9 points in Scrabble, and 11 points in Words with Friends
macro
Adjective
1. Very large in scale or scope or capability
Noun
1. A single computer instruction that results in a series of instructions in machine language
What Scrabble words can I make with the letters in macro?
5 Letter Words
4 Letter Words
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3 Letter Words
2 Letter Words