Astronomy
as·tron·o·my
Altitude
al·ti·tude
Antipodal
an·tip·o·dal
Cartesian (Rectangular) Star Map
car-te-sian star map
Cartesian Coordinates
car-te-sian co-ord-i-nates
Celestial Sphere
ce·les·tial sphere
Equatorial Coordinate System
e-qua-tor-i-al co-ord-i-nate sys-tem
Geospatial
Ge-o-spa-tial
Horizontal Coordinate System
hor·i·zon·tal co·or·di·nate sys·tem
Magnitude
mag·ni·tude
Meridian
Me·rid·i·an
Nadir
na·dir
Orbit
or·bit
Perigee
Per·i·gee
Phase Angle
Diagram from Wikipedia attributed to LibreOffice (seems like a free source, 2nd image has no direct source phase an-gle
Planet
Plan-et
Polar Coordinates
po-lar co-ord-in-ates