(redirected from atomic number)
Also found in: Dictionary, Thesaurus, Medical, Legal, Acronyms, Encyclopedia, Wikipedia.
Related to atomic number: Isotopes, atomic weight


Fifth letter of a Nasdaq stock symbol indicating that listing is a fifth class of preferred stock, a stub, a certificate representing a limited partnership interest, foreign preferred when issued, or a second class of warrants.


1. A symbol appearing next to a stock listed on NASDAQ indicating that the share being traded has a miscellaneous right, warrant, or receipt attached to it. All NASDAQ listings use a four-letter abbreviation; if a Z follows the abbreviation, it indicates that the share's category does not easily fit into other categories.

2. In over-the-counter trading, a symbol meaning that no quote is available for a security.

3. On a table, a symbol indicating an exact number, instead of an estimate, of securities traded.


1. Used in stock transaction tables in newspapers to indicate that the volume reported is the actual number of shares transacted, not the number of round lots: z150.
2. Used in over-the-counter stock transaction tables to indicate that no representative quote is available: z.
References in periodicals archive ?
where E is the electron energy in keV, Z is the atomic number, [m.
Claims to higher atomic numbers, particularly 110, still await that kind of confirmation.
These particles are combined to represent the element's atomic number, and followed by the termination--IUM to complete the element's systematic name.
The questions were, "Name the atomic number of indium" [B1] ("49" [C1] was the correct response), and, "Name the atomic number of polonium" [B2] ("84" [C2] was the correct response).
Hydrogen (H), for example, has an atomic number of 1 and is the lightest known natural element.
The number of protons in an element identifies the atom and is called its atomic number.
The Periodic Table of chemistry is a tabular arrangement of the chemical elements according to atomic number, as based on the Periodic Law which states that certain properties of elements repeat periodically when arranged by periodic number.
The hotel has an interesting line- up of restaurants -- thought at present only the all- day dining destination, Twenty- 9, named after the atomic number of copper, is open and getting good reviews for its Mongolian barbecue.
The results show that relative spin-orbit interaction effect is insignificant according to Rashba effect for thin layer Pb/Si(III) empirical results contrary to high atomic number of zinc.
Reveal's TSA-certified family of Dual Energy CT scanners measures both density and the effective atomic number of every object in a passenger's bag.
There are 8 furlongs in a mile - Spiders and arachnids have 8 legs, and an octopus has 8 tentacles - Hanukkah lasts for 8 days in the Jewish religion - The Beatles had a #1 single titled '8 days a week' - The symbol for infinity is a figure of 8, rotated 90 degrees - The figure 8 is often referred to in ice skating - 8 is the atomic number for Oxygen(O) on the periodic table - In Asian cultures 8 sounds like the words wealth and prosper so therefore it is considered to be a very lucky number