Yes, codon is a Scrabble word!

...and is worth 8 points in Scrabble, and 10 points in Words with Friends

codon

Noun

1. A specific sequence of three adjacent nucleotides on a strand of DNA or RNA that specifies the genetic code information for synthesizing a particular amino acid

What Scrabble words can I make with the letters in codon?

5 Letter Words

condo

3 Letter Words

2 Letter Words

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1 Anagram of Codon

condo

Words that can be created with an extra letter added to codon:

I:conoidS:codonscondosR:condorcordonM:condom