Abbreviations are acceptable in an informal situation or when everyone knows what the abbreviations mean. For example, you could talk about NASA in any setting, but you wouldn't say LOL in a business meeting.
Reinforced Tetrafluoroethylene or Reggie and the Full Effect
the abbreviations are basically universal XL means Extra Large
willam oughtred invented the abbreviations of 'sin' and 'cos'. I'm certain abbreviations existed before this.
BC means Before Christ AD means Ano Domini (after Christ)
RT
RT mean "Re-tweet" It's for twitter
RT-PCR stands for Reverse-Transcription-Polymerase Chain Reaction. It is used in labratories to generate many copies of a DNA sequence. There are other abbreviations close to this as well.
Road / Track racing technology
In crochet and knitting, RT stands for right twist.
Abbreviations
distal
what does DOM mean
ATS
retweet
most home plans using abbreviations (to keep the plan from being cluttered) will have a table that explains the abbreviations
I am not Sure I Taught it was Just the Model of the Crane.