planemo

planemo
 n.— «The debate over the definition of planethood has been simmering for years—and it bubbled up again this week, thanks to new research into free-floating planemos, or planetary-mass objects.» —“Planet-Sized Problems” by Alan Boyle Cosmic Log June 7, 2006. (source: Double-Tongued Dictionary)

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Further reading

Think Tank

Since the 1950’s, the term think tank has meant “a research institute.” But even earlier than that, going as far back as the 1880’s, think tank referred “a person’s mind.” Another slang term for one’s mind is thought box. This is part of a complete...