IDn definitions

Idn

1) Insurance card info
Found on https://www.crosswordclues.com/clue/idn

---

idn

i don't know
Found on http://www.noslang.com/dictionary/i/

---

IDn

Inhibitory dose to n % of a population
Found on https://sis.nlm.nih.gov/enviro/iupacglossary/annex1.html

---

IDN

International Data Number. See X.121.
Found on https://www.encyclo.co.uk/local/22803

---