This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. of or pertaining to the lumen

n. A sedative.

Relating to the lumen of any tubular organ or cell.

n. a long-acting barbiturate used as a sedative

"The exception was HCC1500, which we classified as luminal while Neve et al. labeled it as basal B."

basalolateral   

barbiturate   

transluminal   

sodium thiopental   

thread-thin    venular    chorioallantoic    water-purification    nanowire    tympanic    semipermeable    100-mg    microfiltration    petabyte