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The word "Tm" stands for "thulium," which is a chemical element. Let's break down the explanation to make it easy to understand:

Basic Definition:

• Thulium (Tm) is a soft, silvery metal that is part of a group of elements known as rare earth elements.

Usage:

• Thulium is used in various applications, including in small portable X-ray machines, where it helps produce X-rays.

Example:

• "Thulium is important in the medical field because it is used in portable X-ray machines."

Advanced Usage:

• In scientific discussions, you might encounter phrases like "thulium isotopes" or "thulium compounds," which refer to different forms of the element or its combinations with other elements.

Word Variants:

• The symbol for thulium is "Tm."
• It can also be referred to in terms of its isotopes, such as "thulium-170," which is a specific version of thulium that emits X-rays.

Different Meanings:

• In general conversations, "Tm" might not have a different meaning since it specifically refers to thulium in scientific contexts.

Synonyms:

• There are no direct synonyms for "thulium," as it is a specific element. However, it can be categorized with other rare earth elements like "lanthanum" or "neodymium."

Idioms and Phrasal Verbs:

• There are no idioms or phrasal verbs associated with "thulium" since it is a technical term used mostly in scientific or industrial contexts.

Summary:

Thulium (Tm) is a rare earth metal used primarily in medical applications, especially in X-ray technology.

Academic

Noun

1. a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime

Synonyms

• thulium
• Tm
• atomic number 69