"Batten down the hatches" is a nautical phrase than means to secure the hatches from being accidentally opened in heavy weather. By extension, it means to get prepared for rough going.
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The term nucleus is derived from a Latin word meaning "kernel" or "nut". How is the term nucleus related to its Latin term of origin? The nucleus is like the inside of a nut, and is shaped like a nut.
The term stake out was first used around 1942. The origin of the term is believed to have come from the act of marking off territory with stakes. It now means to maintain surveillance.
family of origin
The best theory I've heard is that it comes from Jericho. IE the walls fell down.
greek is the origin of oceanography
lahar is the term for mass movement that is volcanic in origin
The term is etymology.
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The term used in forensics to describe a sample of unknown origin is "questioned sample."
The origin.
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how to respect our country