Because it comes from the latin "numero"
The word "number" can be abbreviated as "no."
Even though the word "number" has no "o" in it, the abbreviation is No. because it is based on the Latin word numero (which is also Spanish for number).
Numéro ( actually a word borrowed from Italian) is abbreviated No.
The word "speaker" can be abbreviated as "spkr."
The word "hertz" can be correctly abbreviated as "Hz."
It's already abbreviated. But if you mean "What is doesn't abbreviated for?" it means does not.
ORG is how organization is abbreviated.
It is abbreviated to the "web".
The word managed can be abbreviated in a couple different ways. These include "man" and "mgd". However, the word managed is not usually abbreviated.
Manager is abbreviated Mgr.
The word garden is generally not abbreviated because it is such a short word. However, it could be abbreviated as "gdn" or "grdn".
it is you've :)