A member of a class of non-radially pulsating stars that change their brightnesses with periods from 30 seconds to 25 minutes and amplitudes from 0.001 to 0.2 mag in V. Their location on the Hertzspru
ng-Russell diagram identifies them as white dwarf stars that have entered the instability strip as they evolve along the white dwarf track.
A member of a class of non-radially pulsating stars that change their brightnesses with periods from 30 seconds to 25 minutes and amplitudes from 0.001 to 0.2 mag in V. Their location on the Hertzspru
ng-Russell diagram identifies them as white dwarf stars that have entered the instability strip as they evolve along the white dwarf track.
A member of a class of non-radially pulsating stars that change their brightnesses with periods from 30 seconds to 25 minutes and amplitudes from 0.001 to 0.2 mag in V. Their location on the Hertzspru
ng-Russell diagram identifies them as white dwarf stars that have entered the instability strip as they evolve along the white dwarf track.
A member of a class of non-radially pulsating stars that change their brightnesses with periods from 30 seconds to 25 minutes and amplitudes from 0.001 to 0.2 mag in V. Their location on the Hertzspru
ng-Russell diagram identifies them as white dwarf stars that have entered the instability strip as they evolve along the white dwarf track.
An abbreviation, pronounced "[esh](https://en.wiktionary.org/wiki/%F0%90%8C%8E)", for the concept of a web link (a URL string beginning `https://` or `http://`). When prepended to an alphanumeric stri
ng beginning with a capital letter, possibly followed by a URL path, the whole string represents a hypothetical URL with a variable server name. When prepended to a well-formed internet domain name, possibly followed by a URL path, the whole string represents a URL beginning either https or http. When prepended to a URL path beginning "/", the whole string represents a URL with domain name unspecified. The plural form is πes. As a verb, it means to transform an identifier into an actionable π.