Is venous a word in the Scrabble Dictionary

Yes, venous is playable

...and is worth 12 points.

Found in the following dictionaries

Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)

"Venous" Definition

adjective

Having numerous veins, as a leaf or the wings of an insect.
Of, relating to, or being the blood in the veins or pulmonary arteries that is usually dark red as a result of low oxygen content.
Of, relating to, or contained in the veins: venous circulation.
Of, relating to, or full of veins.
Having passed through the capillaries and given up oxygen for the tissues and become charged with carbon dioxide.