periapsis

noun 0.748

axis

noun 0.618

major axis

noun 0.599

periastron

noun 0.598

apse

noun 0.582

asp

noun 0.582

aspis

noun 0.578

apophysis

noun 0.577

apogee

noun 0.576

aphis

noun 0.568

asper

noun 0.565

apophasis

noun 0.561

semimajor axis

noun 0.561

aphelion

noun 0.561

pericenter

noun 0.557

axon

noun 0.554

axil

noun 0.554

aphesis

noun 0.550

semiaxis

noun 0.550

ashpit

noun 0.546

axle

noun 0.542

asphere

noun 0.542

apex

noun 0.537

axis of rotation

noun 0.537

apical

noun 0.531

ape

noun 0.529

arsis

noun 0.526

perihelion

noun 0.521

apa

noun 0.519

pyxis

noun 0.519

aspic

noun 0.518

asha

noun 0.517

axial

noun 0.517

axe

noun 0.513

orbit

noun 0.509

aperture

noun 0.509

apiculus

noun 0.507

visual axis

noun 0.507

anceps

noun 0.506

aspect

noun 0.506

axel

noun 0.505

axion

noun 0.504

orbital

noun 0.504

epiphysis

noun 0.503

ellipse

noun 0.502

ascus

noun 0.501

astroid

noun 0.501