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Wordwise Glossary
Check out these special words used in recent issues of National Geographic Explorer.

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


A
abdomen (AB duh mun): back part of an ant's body

adaptation (ad ap TAY shun): body part or action that allows an animal to live

ancient (an CHANT): from the far past

antibody (AN tee body): substance that sticks to a germ

archaeologist (ar key AH la jist): scientist who learns about ancient people by studying what they left behind

asteroid (as TROYID): space rock

asteroid belt (as TROYID buh elt): area between Mars and Jupiter

astronomer (uh STRAH nuh mer): scientist who studies space

atoll (AH-tul): island made by coral polyps

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B
baboon (bah BOON): kind of monkey with long teeth

bacteria (back TEER ee uh): tiny living things that can help or harm you

barrier island (BEAR-ee-uhr EYE-lind): long, sandy island along a coast

bill (rhymes with still): mouth of a bird

buffalo (BUFF a lo): ox-like animal with big, curved horns

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C
caldera (cal DARE uh): volcanic crater

caterpillar (cat er PILL er): worm-like young of a butterfly or moth

cheetah (CHEE ta): big, spotted cat that can run very fast

cleaning station (KLEEN ing STAY shun): place where shrimps clean fish

colonist (KAHL uh nest): person who lives in a colony

colony (KAHL uh nee): community that belongs to a distant country

compound eye (KAHM POUND I): eye made up of many smaller eyes

continent (KAHN tin unt): large land area

coral reef (KOR el reef): stony structure made by coral polyps

cottage (KA tidge): small house, often with no upstairs

crater (KRAY ter): large hole in the ground

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D
delta (DELL tah): fan-shaped land at the mouth of a river

diurnal (die URN uhl): active during the day

drought (rhymes with out): long period of time without rain or snow

dusk (DUH sk): time just before dark

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E
earthquake (irth KWAKE): sudden shaking of Earth's surface

echo (ECK oh): sound that bounces off an object

echolocation (eck oh lo KAY shun): using sound to find things

endangered (in DANE jird): at risk of dying out

energy conservation (EN er gee kahn zer VAY shun): using less energy

erosion (uh ROW zhun): when natural forces carry land bits away

ethnic group (ETH-nick group): people who share a language, practices, and beliefs

exoskeleton (ecks o SKEH luh tun): hard outer covering

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F
fang (rhymes with sang): long front tooth for tearing food

fault (rhymes with MALT): big crack in Earth

filter feeder (FILL ter FEED er): animal that swallows seawater, pushes it out, and eats creatures left behind

food chain (FOOD CHAIN): series of plants and animals that eat one another

fungus (FUN guss): mold-like plant

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G
gait (gate): an animal's way of walking or running

gasoline (GAS oh leen): form of oil used in cars

gavity (GRA vuh tea): force that pulls things toward a star or planet

germ (rhymes with term): tiny thing that can cause sickness

geyser (GI zuhr): natural fountain

gill (rhymes with chill): body part that lets an animal breathe underwater

global warming (GLOW bul WAR ming): worldwide rise in a planet's temperature

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H
habitat (HAB eh tat): place where something lives

headdress (head dress): head covering, often with special meaning

hoodoo (WHO do): pole made of rock

hull (rhymes with dull): main body of a boat

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I
immune system (uh MEWN sis tum): parts of your body that fight sickness

impact crater (EM pact KRAY ter): hole in the ground made by a space rock

impala (im PAL uh): kind of African antelope

insect (in SEKT): bug with six legs

island (EYE lind): land surrounded by water

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J
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K
katydid (katie DID): bug that eats plants

kidnapper (KID nap er): someone who steals a person

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L
larva (LAR vuh ): stage between egg and adult for many insects

lava (LAH vuh): melted rock

legend (LEDGE und): story that is passed down

lemur (LEE mur): monkey-like animal

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M
magma (MAG muh): melted rock

mammal (MAM uhl): animal that feeds its young milk

mantid (man TID): bug that eats other animals

marine microfauna (mah REEN MY kro fawn uh): tiny sea creatures

meteoroid (ME tea or ide): small space rock

migrate (MY grate): move to another place

mucus (MEW kus): slimy substance made by an animal to wet or protect its body

mural (MUR ul): painting on a wall

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N
natural resource (NACH uh rul REE sors): something useful found in nature

nectar (NECK ter): sweet juice made by plants

nocturnal (nok TURN uhl): active at night

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O
oarsman (ORZ muhn): person who uses an oar to move a boat

odonatologist (o doh NAH TAHL o gist): scientist who studies dragonflies

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P
palace (PAL us): home of a king or queen

palm tree (PALL hum tree (rhymes with see)): tree with large leaves that grows in warm places

planet (PLAN et): large body in space

plate (rhymes with WAIT): large piece of Earth's surface

potter (POT er): person who makes pots and dishes from clay

predator (PRED uh tor): animal that eats other animals

prey (rhymes with day): animal that becomes food for another animal

pyramid (peer UH mid): large building with a square bottom and triangular walls

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Q
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R
rain forest (rane FOR rest): wooded area that gets at least ten centimeters (four inches) of rain a month

refining (re FINE ing): heating oil to separate it into different chemicals

ruin (ROO in): what is left of an old building or city

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S
scale (rhymes with mail): plate-like body part

scarlet macaw (SCAR let muh CAW): kind of parrot

solar system (SOLE er siss tem): the sun and all that circles it

species (SPEE shees): type of plant or animal

spine (spy nuh): pin-like body part

squid (rhymes with kid): long, thin sea creature with ten arms

supervolcano (sue PUHR VAHL cane o): huge volcano

swim bladder (swim BLAH der): body part that fills with air to help a fish rise

symbiotic relationship (sim bee AH tik rih LAY shun ship): close link between two different kinds of things

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T
temple (TEM pull): building used for religion

tentacle (TEN tih kuhl): thin, arm-like part sometimes used to catch food

termite (TERR my tuh): bug that eats wood

territory (TEAR uh tor ee): an animal's area

thorax (THOR ax): middle of an ant's body

tobacco (tuh BACK oh): plant that people dry and smoke

tomb (rhymes with room): place for the dead

tribe (TRY buh): a group of people with the same way of life

tusk (rhymes with dusk): large, horn-shaped tooth

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U
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V
village (VIL idge): small town

volcanic island (vahl CAN eck EYE lind): island made by a volcano

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W
weathering (WETH er ing): when natural forces break rock into pieces

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Y
yak (rhymes with sack): hairy ox that lives in Asia

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Z
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