also: ヴィールス
noun
Older loanword from German 'Virus'; in modern Japanese ウイルス is far more common. Still understood, but may sound dated or technical.
from German
See also: ウイルス
昔の医学書では「ビールス」という表記がよく使われていた。
In old medical books, the spelling 'ビールス' was often used.
The standard modern Japanese word for 'virus', derived from Latin via English. ビールス is an older German-derived term now largely replaced by ウイルス.
Borrowed from German 'Virus'. The spelling ビールス reflects the German pronunciation, while ヴィールス attempts to preserve the 'V' sound. Both are now largely replaced by ウイルス.