Definition of "SG"

SG

noun
countable and uncountable, plural SGs
1. Initialism of Secretary General.
2. (physics) Initialism of specific gravity.
3. (basketball) Initialism of shooting guard.
4. (Philippines, colloquial) Initialism of security guard.
proper noun
1. (philately) Initialism of Stanley Gibbons, stamp dealer and catalogue publisher.
2. (comics) Initialism of Super Girl (“DC Comics superheroine”).
  Quotations
  Although Supergirl fans will relish page 4, I believe the first panel of 5 says it all: after a full force ramming by SG, PG just casually tosses her into a wall. Now *that's* Power Girl.
  1997 October 25, Lightning, “REVIEW Power Girl #1, uhm, I mean Supergirl #16”, in rec.arts.comics.dc.universe‎ (Usenet), message-ID <[email protected]>
  Actually, a point could be made that the animated Supergirl is much more like Power Girl than the pre Crisis Supergirl.For one thing she adopted the name Karen (Karen Starr was the name Kara Zor-L created), also she wears PG's costume colors and has a strong resentment toward's Clark's overprotectiveness. The only difference is that the animated SG has the Kara Zor-El personality more than she does Power Girl's.
  1998 May 6, [email protected], “Re: Why is TV kind of pre-Crisis and comics Post-Crisis”, in rec.arts.comics.dc.universe‎ (Usenet), message-ID <[email protected]>
  I kinda hate how they made Power Girl (Kara/SG pre-Crisis on World 2 or 3?) evil and a clone of SG. One of my fav comics growing up was Supes, and PG and I think Green Arrow going after Vandal Savage.
  2005 September 21, [email protected], “Re: JLU - WOW”, in alt.tv.cartoon-network‎ (Usenet), message-ID <[email protected]>