There are 2 main definitions of Pyxis in English:

Pyxis1

Syllabification: Pyx·is
Pronunciation: /ˈpiksis
 
/
Astronomy
1A small and inconspicuous southern constellation (the Compass Box or Mariner’s Compass), lying in the Milky Way between Vela and Puppis.
1.1 (as genitive Pyxidis /ˈpiksidis/) Used with a preceding letter or numeral to designate a star in this constellation: the star Alpha Pyxidis

Origin

Latin.

Definition of Pyxis in:

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There are 2 main definitions of Pyxis in English:

pyxis2

Line breaks: pyxis
Pronunciation: /ˈpɪksɪs/

Entry from British & World English dictionary

noun (plural pyxides /-ˌdiːz/)

A small box or casket.

Origin

late Middle English: via Latin from Greek puxis, from puxos 'box'.

Definition of Pyxis in: