Synonyms to recursion

reentry, Earth insertion, LEM, LM, apogee, attitude-control rocket, backset, backsliding, backward motion, backward step, ballistic capsule, burn, capsule, deep-space ship, docking, docking maneuver, ferry rocket, fuel ship, homecoming, injection, insertion, lapse, lunar excursion module, lunar module, manned rocket, module, moon ship, multistage rocket, orbit, parking orbit, perigee, reaction, recession, recidivation, recidivism, reentrance, refluence, reflux, regress, regression, relapse, remigration, retroaction, retrocession, retroflexion, retrogradation, retrogression, retrusion, return, rocket, rollback, setback, shuttle rocket, soft landing, space capsule, space docking, space rocket, spacecraft, spaceship, sternway, throwback, CRT spot, DM display, Doppler signal, IF signal, IM display, RF echoes, about-face, acknowledge, acknowledgment, action and reaction, advent, advert, afford, alternate, alternation, amends, answer, answer back, answering, antiphon, arrival, atavism, atonement, automatic reaction, autonomic reaction, back answer, back talk, backchat, backing,