LMC can refer to several different things, depending on the context. Here are some possible meanings:

• Large Magellanic Cloud: In astronomy, LMC is an initialism for the Large Magellanic Cloud, which is a satellite galaxy of the Milky Way. It is located in the southern hemisphere and is visible to the naked eye from Earth.

• Let Me Check: In internet slang, LMC can stand for "Let Me Check," which is a phrase used to indicate that someone needs to verify something before giving an answer.

• Least Material Condition: In engineering, LMC is an initialism for Least Material Condition, which is a feature of size symbol that describes a dimensional or size condition where the least amount of material (volume/size) exists within its dimensional tolerance. The callout also overrides GD&T Rule#2 or the Regardless of Feature Size rule.

• Other meanings: LMC can also stand for other things, such as "Low-Mass Companion" (star), "Lost My Connection," "Local Medical Committee," and "League of Minnesota Cities".

It is important to consider the context in which LMC is being used to determine its meaning.