出典:Wiktionary
出典:『Wiktionary』 (2026/01/29 19:40 UTC 版)
Probably borrowed from Dutch hou vast, houd vast (“hold fast!”), from houd (imperative of houden, “to hold”) + vast (“fast, firm, tight”, adverb). Doublet of hold fast.
avast (nautical)
出典:Wikipedia
出典:『Wikipedia』 (2011/05/27 03:23 UTC 版)
Avast! is an antivirus computer program developed by AVAST Software a.s. (formerly known as ALWIL Software a.s.), a company based in Prague, Czech Republic. It was first released in 1988. Avast! is based on a central scanning engine that is certified by ICSA Labs and West Coast Lab's Checkmark process and incorporates anti-spyware technology, also certified by West Coast Lab's Checkmark process, as well as anti-rootkit and self-protection capabilities. It is a multiple recipient of the Virus Bulletin VB100 Award for its detection of 100% of "in-the-wild" viruses, and is a past winner of the Secure Computing Readers' Trust Award. The name Avast is derived from "Anti-Virus – Advanced Set". Its trademarked name is styled in all lower-case, and includes an exclamation mark.
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