1. In isolation and without reference to anything else 
2. In a vacuum

Encyclopedia: In vacuo

• blockading
• blockage
• blockbuster
• blocked
• blocker
• blockhead
• blockheaded
• blockhouse
• blocking
• blocking agent
• blockish
• blocky
• Bloemfontein
• blog
• blogger
• blogosphere
• Blok
• bloke
• blokeish
• blokey
• blokish
• blolly
• blond
• blonde
• blonde lilian