| alien |
When something seems alien to you, it seems strange or not natural. [1/5 definitions] |
| aptitude |
a natural ability; talent. [1/2 definitions] |
| art |
a fine skill that has resulted from natural ability, practice, or study. [1/4 definitions] |
| artery |
Arteries are natural tubes in the body that blood flows through. Blood flows away from the heart through arteries. |
| artificial |
made by human beings; not natural. [1/2 definitions] |
| bacteria |
microscopic organisms that often play a role in the decay of living things, the process of fermentation, and sometimes in causing disease. Bacteria are each made up of only one cell, but different kinds of bacteria can take different shapes. These organisms live in all parts of the earth including oceans, deserts, glaciers, hot springs, and in the bodies of most living things. While some kinds of bacteria are dangerous, most kinds are useful because they help in the digestion of food, in the making of soil, in the creation of medicines, and in many other natural processes. |
| bald |
not covered by a natural growth. [1/2 definitions] |
| barrier |
A barrier is a natural thing that blocks a way of traveling somewhere. [1/2 definitions] |
| bionic |
an electronic or mechanical device that replaces or helps something natural. An artificial leg is one kind of bionic device. |
| born |
since birth; from natural talent rather than practice or education. [1/3 definitions] |
| camouflage |
Camouflage is a way of hiding something. Camouflage hides a thing by covering or coloring it so that it looks like whatever is around it. Many animals have natural camouflage. Their skin or fur has the same color as the things around them. The army sometimes uses camouflage to hide people, buildings, or vehicles. |
| camp1 |
When you camp, you sleep at night in an outdoor place, often in a tent. When people travel or take a vacation, they sometimes camp instead of staying in a hotel. People often camp in places like woods, forests, and other natural places. [1/3 definitions] |
| camping |
the activity of staying for a while in an outdoor place and sleeping in a tent, or sleeping in another type of shelter made for staying overnight in natural places. |
| canvas |
Canvas is a kind of heavy, strong cloth made of natural materials. It is often used for making things like sails for boats, tents, and some kinds of shoes. [1/2 definitions] |
| cave |
a natural hole or hollow in the earth. Many caves have openings in a hillside or cliff. |
| cavern |
A cavern is a very large cave. A cave is a natural hollow place in the earth. A cave can be big enough for a person or animal to go inside, but sometimes it is very small. A cavern is big enough for people to walk around in. |
| chalk |
a substance made from natural chalk that is formed into round sticks that can be used to write or draw with, especially on a blackboard or on pavement. [1/3 definitions] |
| champagne |
Champagne is a type of wine that has natural bubbles in it. Champagne is produced from grapes grown in a particular region of France called "Champagne." This kind of wine is called a "white wine," but it's not really white. The color is closer to beige or gold. The taste is not very sweet. |
| channel |
A channel is a long, narrow body of water that connects two larger bodies of water. There are natural channels that connect bodies of water like seas and oceans, and there are smaller man-made channels also. [1/3 definitions] |
| communism |
(sometimes capitalized) a system of government in which all factories, farms, and natural resources are owned in common. |
| complexion |
the natural color and condition of the skin, especially of the face. |