In English, we use e.g. to mean for example or for instance and i.e. to mean in essence, namely or in other words. The abbreviations e.g. and i.e. are commonly used in writing, mainly academic writing, but also in informal writing and sometimes in everyday speech.

The abbreviation "e.g." is from the Latin exempli gratia and means, literally, "for example." Periods come after each letter and a comma normally follows unless the example is a single word and no pause is natural: Any facial response (e.g., a surprised blink of both eyes) was recorded.

As stated above, e.g. is short for “for example.” The easiest way to remember this one is that it starts with an “ e ” and so does “ example.” Here’s how to use for example (e.g.) in a sentence: “There are many types of trees (e.g., spruce, oak, maple) in the study area.”

e.g. is the customary abbreviation for " for example. " It is derived from the Latin phrase "exempli gratia." So I don't have to worry about remembering the Latin derivations, I simply remember that example and e.g. both start with the letter e. E=example=e.g.