Know why cattywampus was trending last week?
Latin hora somni (before sleep, at bedtime)
The symbol for hassium.
A synthetic, radioactive element that is produced by bombarding lead with iron ions. Its most long-lived isotopes have mass numbers of 264 and 265 with half-lives of 0.08 millisecond and 2 milliseconds, respectively. Atomic number 108. See Periodic Table.