A nanosized canal (in a biological structure, or constructed from nanoparticles)

(Uralic linguistics, of verbs) Characterizing verbs or verbal affixes denoting actions that occur suddenly or sharply.

(organic chemistry) An amine derived from polyethylene glycol (PEG)

(medicine) Initialism of hematopoietic stem cell transplantation. / Initialism of health and social care trust.