Skip to content A B C D E F G H I J K L M N O P Q R S T U V W X Y Z planetary Of, or relating to planets, or the orbital motion of planets. planetbound Unable to leave the planet one is on. planetcide The act of killing all living creatures on a planet. planetdom Those things that are planets; the state of being a planet. planeted Of or relating to planets. planeteer Someone who helps protect the environment. planetesimal Any of many small, solid astronomical objects that orbit a star and form protoplanets through mutual gravitational attraction. planetfall The arrival of a spacecraft on the surface of a planet. planetful As many as a planet can or does hold. planethood The state or condition of being a planet. planetic Of or relating to planets; planetary. planetical Pertaining to the planets and/or their motions. planetkin A small planet. planetless Without planets. planetlike Resembling or characteristic of a planet. planetling A minor, miniature, or insignificant planet. planetman Someone from one's own planet. planetocentric Having a planet at the center. planetographer Someone who studies planetography ("the branch of astronomy concerned with the description of the physical features of planets"). planetographic Of or pertaining to planetography planetography The branch of astronomy concerned with the description of the physical features of planets planetoid An asteroid of any size planetoidal Relating to a planetoid. planetologic Synonym of planetological. planetological Of or pertaining to planetology. planetologist A planetary scientist. planetology The study of planets, planetary systems and the solar system. planetophysics The branch of astrophysics dealing with planets and planetary systems; planetology Planetos The unnamed fictional planet which serves as the setting for the A Song of Ice and Fire novel series and its television adaptation Game of Thrones. planetquake A seismic event occurring on a planet (especially one other than Earth). planetrise The event in which two planets are in a position in their orbits that they're next to each other, and being on one's perspective the other planet will seem to rise in the sky. planetscape The landscape of the surface of a planet. planetship A spacecraft for relatively short journeys in the vicinity of a planet. planetside On a planet. planetsider Someone who lives on a planet. planetule A little planet. planetward Towards a planet. planetwards Towards a planet. planetwide Throughout a planet; covering a whole planet. planform The shape and layout of a fixed-wing aircraft's fuselage and wing. planful Having (many) plans. planfully In a planful manner. planfulness The state or quality of being planful plangence Plangency. plangency The state of being plangent. plangent Having a loud, mournful sound. plangently In a plangent manner: with a loud reverberating sound, or plaintively. plangonologist A person who collects dolls. plangorous Loudly lamenting. planholder The customer who has purchased a plan, such as a pension or insurance plan. planidial Of or pertaining to a planidium or anything similar planidiform Having the form of a planidium planidium The first-instar larva of any species of parasitoidal insect in which the life cycle is an example of hypermetamorphosis; so called because the first instar wanders in search of the host, whereas the rest of the instars remain stationary while they feed until they pupate. planification The process of planning. planifolious Having flat leaves. planiform Having a plane surface. planify to plan planigale Any species of the genus Planigale of small insectivorous marsupials endemic to Australia and New Guinea. planigon A convex polygon that can fill the plane with only copies of itself. planigram Synonym of tomogram. planigraph A medical device for precision layer radiography. planimal Something that has characteristics of both plants and animals. planimeter An integrating device used to measure the area of an irregular figure via tracing its outline. planimetric relating to planimetry; made by means of a planimeter planimetrically In a planimetric manner. planimetry The measurement of distances, angles and areas on a plane, especially on a map or image planing The act by which something is planed. planipetalous Having flat petals. planish To repeatedly hammer (a sheet of metal) so as to shape and smooth it or create a decorative indented finish. planisher One who, or that which, planishes. planishing A metalworking technique for smoothly finishing a surface. planism Support for the idea of a planned economy. planisphere Any representation (map projection) of part of a sphere on a plane surface. planispheric Of or pertaining to a planisphere. planispiral Coiled in the plane (as opposed to helical). planispirally In a planispiral fashion. planist A supporter of planism. planitia A low plain. plank A flat piece of wood on which to cook fish, so that the wood provides flavor and helps to produce a pleasing texture. plankage A charge levied for the use of a plank in unloading a vessel. plankboard A flat piece of wood; a plank or board. planked Made of planks of a specific type or number. planker A workman who fits planks to a ship. plankhouse A house constructed by some Native Americans out of planks held together by rope planking A series of planks; a group of planks. Plankinton A surname. plankless Without a plank or planks. planklike Resembling or characteristic of a plank. plankowner A member of the crew of a navy ship when it was placed on commission. plankter A single organism of plankton. planktic planktonic planktivore An animal feeding primarily on plankton, such as a blue whale. planktivorous Consuming or eating plankton planktivorously In a planktivorous manner planktivory The eating of plankton. planktocyclin A cyclooctapeptide protease inhibitor produced by the cyanobacterium Planktothrix rubescens planktological Of or pertaining to planktology. planktologist One who studies planktology. planktology The study of plankton plankton Organisms, especially small and microscopic ones, that drift in water. planktonic Of or pertaining to plankton. planktonically In the manner of plankton planktonivore Any organism that feeds on plankton planktonivorous That feeds on plankton. planktonivory Feeding on plankton planktonophagous Consuming plankton. planktont Synonym of plankton. planktontic Synonym of planktonic. planktophage Planktotroph. planktophagous Consuming plankton. planktophyte Phytoplankton. planktotroph Any organism that feeds on plankton planktotrophic That feeds on plankton planktotrophy The condition of being planktotrophic or of being a planktotroph plankway A walkway consisting of a series of planks. plankwise Across the grain, not parallel to it. planky Resembling or characteristic of a plank. planless Without a plan. planlessly Without a plan or scheme; aimlessly. planlessness The state or quality of being planless. plannability The quality of being plannable. plannable Capable of being planned. planned Existing or designed according to a plan. plannedness The state or quality of being planned. plannee A person for whom plans are made. planner One who plans. planning The act of formulating of a course of action, or of drawing up plans. plano Of lenses: flat; having no curvature; not serving to correct the vision. planoblast Any free-swimming gonophore of a hydroid; a hydroid medusa. planoccipital Of or pertaining to a flattened occipital bone. planocerid Any flatworm of the family Planoceridae planoconcave Having one side plane and the other concave planoconical Plane or flat on one side, and conical on the other. planoconvex Having one side plane and the other convex. planocraniid Any crocodylian of the family Planocraniidae. planoepithelial flat and epithelial planogamete One of the motile ciliated gametes, or zoogametes, found in isogamous plants and green algae. planogamic Of or relating to planogamy. planogamous Of or relating to planogamy. planogamy The presence of planogametes planogram A predetermined computer-generated plan for displaying merchandise on the shelves of a supermarket; normally fine-tuned for each store planograph A kind of straightedge on wheels that is rolled over a surface to measure its regularity. planographic Relating to planography; pertaining to printing made from a plane surface. planographically In a planographic manner. planography A form of printing from a flat surface, as opposed to a raised or incised one. Planoite Someone from Plano, Texas. planomania enthusiastic planism planometer A flat, metal plate used for estimating the flatness of a machined part; a surface plate. planometric Relating to planometry. planometrically By means of or in terms of planometry.