g

noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about g at Wordnik → Where our words come from →

1. A metric unit of weight equal to one thousandth of a kilogram.
2. A purine base found in DNA and RNA; pairs with cytosine.
3. One of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose).