The noun VIRION has 1 sense: 1. (virology) a complete viral particle; nucleic acid and capsid (and a lipid envelope in some viruses). Familiarity information: VIRION used as a noun is very rare.he noun VIRION has 1 sense: 1. (virology) a complete viral particle; nucleic acid and capsid (and a lipid envelope in some viruses). Familiarity information: VIRION used as a noun is very rare.
How to Find the Best Basel Hotels with Hotels.com. Basel is one of the largest cities in Switzerland, and is situated along the river Rhine where the Swiss, French, and German borders meet, with suburbs located in both France and Germany.
Climate & Temperature > Switzerland > Basel Climate > Average Temperatures. 1  The annual average temperature in Basel, Switzerland is a little cool at 9.5 degrees Celsius (49.1 degrees Fahrenheit).  The range of average monthly temperatures is 19 C (34.2F) which is a slightly low range.