Magnetosphere - like an apple tree :


mal.us N 2 1 NOM S M
malus, mali N M [XXXDX] lesser
mast; beam; tall pole, upright pole; standard, prop, staff;

mal.us N 2 1 NOM S F
malus, mali N F [XXXDX] lesser
apple tree;

mal.us ADJ 1 1 NOM S M POS
malus, mala -um, pejor -or -us, - ADJ [XXXAX]
bad, evil, wicked; ugly; unlucky;

http://www.thefreedictionary.com/Pyxis


http://www.constellationsofwords.com/Constellations/Pyxis.htm
associate Tesla ; St Elmo's fire;
oaken mast ; brain cerebellum