BD

When used in acronyms such as hbd and hlbd, bd pretty clearly stands for "birthday." Less commonly, some texters and online chat users may use bd as a standalone abbreviation that means "birthday."

If you thought BD stood for "big deal," well, it does. When used by itself, BD most commonly means "big deal." Those who use bd to mean "birthday" either can't be bothered to type out the two extra letters needed to spell bday or don't understand how ambiguous bd can be.

Or, "backdooring;" a League of Legends term that refers to a strategy in which players use their champions to attack turrets or the enemy's Nexus without pushing a corresponding lane first; to employ this strategy, players generally need an element of surprise and some sneaky tactics.

You can emphasize the importance of something, such as an issue, person, or an event, with "BD," which stands for "big deal." For example, you might say, "Getting married is a BD; make sure your wedding day is what you want."

Most people use BD when messaging via text or online. However, they may also use it on social media and in emails. And if it's a huge deal, a person may use the BFD acronym. Or, if it's not that big of a deal, you can use the NBD or INBD acronyms.

If you're currently discussing a child's father, BD may stand for "baby daddy." Most commonly, people use BD to refer to a father who is not present in his child's life. (If a woman is lucky, her BD at least pays child support.)

Women who have one or more BDs, and those women's friends and family, are most likely to use this acronym. More rarely, you may encounter BD in forum or social media messages, discussing someone's (probably a celebrity's) BD.

BD is an abbreviation for Blu-ray digital optical disc data storage technology. Most people use BD to refer to a Blu-ray disc, but others may also refer to a Blu-ray player.

Sony and the Blu-ray Disc Association developed the Blu-ray format in the mid-2000s, and it gained prominence in the late-2000s. With its larger storage space and support for higher video resolution, it replaced DVDs and became the physical distribution method of video games.

You may see BD on Blu-ray disc packages, in online conversations about movies, or in texts referring to the format. For example, your friend may text, "Can you bring the Inception BD over tonite?" People may also use br as an abbreviation for Blu-ray.