AD what does it mean in detail ah

1. AD is an abbreviation of the English advertisement, that is, the noun "advertising" means.

The word "advertising" is a translation of the English "Advertising". According to evidence, the English word "Advertising" comes from the Latin word - Adverture, the initial meaning is to attract attention, with the meaning of notice, inducement, disclosure. Later, the word "Adverture" evolved into "Advertise" in the Middle English era (about 1300-1475 AD), and its meaning was broadened to: "to bring something to someone's attention" or "to notify someone of something in order to get someone's attention". attention of others."

2. A.D. is the abbreviation of "Gregorian calendar", which is an internationally recognized system of dating. The first year of the Gregorian calendar is the year of the birth of the legendary Jesus (equivalent to the first year of Emperor Pingdi of the Western Han Dynasty in China). A.D. (abbreviation of Latin Anno Domini, meaning "the year of the Lord's birth") is often used to denote A.D., while B.C. (abbreviation of Before Christ) is used to denote B.C. This system of dating has been adopted by various countries. This system of dating was adopted by all nations.

3. AD, or LEITE RIBEIRO ADRIANO (Leite Ribeiro Adriano), was a soccer player.

AD: LEITE RIBEIRO ADRIANO (Leite Ribeiro Adriano)

4. AD is an acronym in English, the full name of the English language, Andorra, the Chinese interpretation: Andorra **** and the country.

.ad is the ccTLD of Andorra, which is an offshore domain name.

There are no restrictions on the eligibility to register a .ad domain name, and individuals or businesses from any country can register.

5. Alzheimer disease (Alzheimer disease, AD), also known as Alzheimer's disease, is a degenerative disease of the central nervous system, with an insidious onset and a chronic progressive course, and is the most common type of dementia in old age.

The main manifestations are progressive memory impairment, cognitive dysfunction, personality change, language impairment and other neuropsychiatric symptoms, which seriously affect social, occupational and life functions.

The etiology and pathogenesis of AD have not yet been elucidated, and the characteristic pathological changes are extracellular senile plaques formed by β-amyloid deposition and neurofibrillary tangles within nerve cells formed by overphosphorylation of tau proteins and neuronal loss with glial cell proliferation, as well as the formation of neuronal fibers. Neuronal loss with glial cell proliferation.