2. Noun. (biochemistry) nucleic acid analogue (nucleic acid analog) ; (initialism of xeno nucleic acid) (qualifier backformation) ; X nucleic acid, where "X" is a stand-in for multitude of various nucleic acid acronyms, which are not DNA or RNA ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of XNA
XHR XHTML XII XIII XIV XIX XL XM XMA XML | XML Path Language XMM XMP XMRV XMS XNA (current term) XNAY XNAs XNOR XO | XOR XOR circuit XOR gate XORed XORing XORs XP XPCOM |