memento /mi-menˈtō/

1. Something kept or given as a reminder
2. A fit of reverie (obsolete)

memento mori /mōˈrī or moˈrē/ noun (Latin)

1. Remember that you must die
2. Anything (eg a skull) to remind one of mortality

• isobases
• isobath
• isobathic
• isobaths
• isobilateral
• isobront
• isobronts
• isobutylene
• isobutylenes
• isochasm
• isochasmic
• isochasms
• isocheim
• isocheimal
• isocheimenal
• isocheimic
• isocheims
• isochimal
• isochime
• isochimes
• isochor
• isochore
• isochores
• isochoric
• isochors