In physics, electromagnetic radiation (EMR) or electromagnetic wave (EMW) is a self-propagating wave of the electromagnetic field that carries momentum and radiant energy through space. [1][2] It …

The rules of when and where to use which kind of dash may seem complex and hard to understand, but they don't have to. Here's your guide to how to use em dashes, en dashes, and hyphens correctly.

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The em dash is perhaps the most versatile punctuation mark. Depending on the context, the em dash can take the place of commas, parentheses, or colons ⁠—in each case to slightly different effect.

Definition and Usage The <em> tag is used to define emphasized text. The content inside is typically displayed in italic. A screen reader will pronounce the words in <em> with an emphasis, using verbal …

Jul 9, 2025 · The <em> element is for words that have a stressed emphasis compared to surrounding text, which is often limited to a word or words of a sentence and affects the meaning of the sentence …

Mar 8, 2022 · An em dash is a punctuation mark that can be used to replace commas, parentheses, colons, and semicolons. In general, the em dash is seen as being more interruptive or striking than …

106 definitions of EM. Meaning of EM. What does EM stand for? EM abbreviation. Define EM at AcronymFinder.com

Aug 15, 2025 · Grammar columnist and expert June Casagrande dives into why we use the em dash and the AI myths associated with it.

`em is an informal way of saying or writing them. There was also two other men there with `em too. Collins COBUILD Advanced Learner’s Dictionary. Copyright © HarperCollins Publishers