See Sierterm: https://sierterm.es/content/ion/?lang=en

GC: n S: PPL – http://bit.do/eBnzx (last access: 21 November 2018); MPI – http://bit.do/eBnAn (last access: 21 November 2018). N: 1. – irregular (adj): late 14c., “not in conformity with Church rules,” from Old French irreguler “irregular, incapable, incompetent” (13c., Modern French irrégulier), from Medieval Latin irregularis “not regular,” from

GC: n S: NCBI – https://www.ncbi.nlm.nih.gov/pubmed/10615756 (last access: 3 July 2019); RESG – https://www.researchgate.net/publication/221857744_Australian_Carybdeid_jellyfish_causing_Irukandji_syndrome (last access: 3 July 2019). N: 1. The syndrome was given its name in 1952 by Hugo Flecker, after the Aboriginal Irukandji people who live in Palm Cove, north of Cairns, Queensland, Australia, where stings are

In the field of Medicine in general. See quarantine, and read carefully the note 4. See lockdown, and read specially the note 3.