Windows Defender, officially called Windows Defender Antivirus in Windows 10 Creators Update, is an anti-malware component of Microsoft Windows. It was first released as a free antispyware program download for Windows XP, shipped with Windows Vista and Windows 7 and made into a full antivirus program replacing Microsoft Security Essentials as part of Windows 8 and later versions.
Based on the above text, what's the best answer to this question: is windows defender an antivirus in windows 7?
no