Meaning: a type of fungus, often with a cap and stem

Part of speech: noun

Example: The agaric mushroom is edible.

Category: Biology › Fungi

Synonyms: mushroom

Meaning: the process of growing older

Part of speech: noun

Example: Ageing is a natural part of life.

Category: Biology › Life Cycle

Synonyms:

• growing old
• maturing

Meaning: A person or animal with a lack of pigmentation, resulting in white skin and hair.

Part of speech: noun

Example: The albino rabbit was very unique.

Category: Biology › Genetics

Meaning: A type of protein found in egg whites and blood plasma.

Part of speech: noun

Example: Albumin is important for maintaining blood volume.

Category: Biology › Proteins

Meaning: An animal that can live both on land and in water.

Part of speech: noun

Example: Frogs are a common example of amphibians.

Category: Biology › Zoology

Synonyms:

• frog
• toad

Meaning: A class of joint-legged invertebrates that includes spiders and scorpions.

Part of speech: noun

Example: Arachnids have eight legs.

Category: Biology › Zoology

Synonyms:

• spider
• scorpion

Meaning: Not involving sexual reproduction; also refers to individuals who do not experience sexual attraction.

Part of speech: adjective

Example: Some plants are asexual and reproduce through cloning.

Category: Biology

Synonyms:

• nonsexual
• reproductive

Antonyms:

• sexual
• romantic

Meaning: A long, slender projection of a nerve cell.

Part of speech: noun

Example: The axon transmits signals away from the cell body.

Category: Biology › Neuroscience

Meaning: Relating to or composed of cartilage.

Part of speech: adjective

Example: Sharks have cartilaginous skeletons.

Category: Biology › Anatomy

Synonyms:

• flexible
• soft

Meaning: A cell or organ that responds to chemical stimuli.

Part of speech: noun

Example: Chemo receptors help organisms detect changes in their environment.

Category: Biology

Synonyms: chemical receptor

Meaning: A short form for chimpanzee, a type of primate.

Part of speech: noun

Example: The chimp swung from branch to branch.

Category: Biology › Zoology

Synonyms:

• ape
• primate

Meaning: A large primate known for its intelligence and social behavior.

Part of speech: noun

Example: The chimpanzee is closely related to humans.

Category: Biology › Zoology

Synonyms:

• chimp
• primate

Meaning: A small rodent known for its soft fur, native to South America.

Part of speech: noun

Example: Chinchillas are often kept as pets.

Category: Biology › Zoology

Synonyms:

• rodent
• pet

Meaning: A small, striped rodent known for its cheek pouches.

Part of speech: noun

Example: The chipmunk gathered nuts for winter.

Category: Biology › Zoology

Synonyms:

• rodent
• squirrel

Meaning: The green pigment found in plants that is essential for photosynthesis.

Part of speech: noun

Example: Chlorophyll gives plants their green color.

Category: Biology › Botany

Synonyms:

• pigment
• green pigment

Meaning: Referring to animals that do not regulate their body temperature internally.

Part of speech: adjective

Example: Cold-blooded creatures like reptiles rely on their environment to stay warm.

Category: Biology

Synonyms: ectothermic

Antonyms: warm-blooded

Meaning: The act of completing or enhancing something.

Part of speech: noun

Example: Complementation of the project improved its overall quality.

Synonyms:

• completion
• enhancement

Meaning: An eye made up of many small visual units, found in insects and some crustaceans.

Part of speech: noun

Example: The compound eye allows insects to see a wide field of view.

Meaning: To make something narrower or tighter.

Part of speech: verb

Example: The cold weather can constrict blood vessels.

Category: Biology

Synonyms:

• tighten
• narrow

Antonyms:

• expand
• widen

Meaning: The act of making something narrower or tighter.

Part of speech: noun

Example: Constriction of the airway can lead to breathing difficulties.

Category: Biology

Synonyms:

• narrowing
• tightening

Meaning: Capable of contracting or shrinking.

Part of speech: adjective

Example: The contractile tissue helps in movement.

Category: Biology › Physiology

Synonyms:

• contracting
• shrinking

Antonyms:

• expanding
• growing

Meaning: The process of becoming smaller or shorter.

Part of speech: noun

Example: The contraction of the muscle is essential for movement.

Category: Biology › Physiology

Synonyms:

• shortening
• tightening

Antonyms:

• expansion
• elongation

Meaning: to breed animals or plants of different varieties

Part of speech: verb

Example: They decided to crossbreed the two dog breeds.

Category: Biology

Synonyms:

• hybridize
• mix

Meaning: The process of declining or deteriorating.

Part of speech: noun

Example: Degeneration of the environment is a serious concern.

Category: Biology

Synonyms:

• decline
• deterioration

Antonyms: improvement

Meaning: A type of flowering plant with two seed leaves.

Part of speech: noun

Example: Beans are a common example of a dicotyledon.

Category: Biology › Botany

Synonyms: dicot

Meaning: To swell or expand.

Part of speech: verb

Example: The balloon began to distend as it was filled with air.

Category: Biology › Anatomy

Synonyms:

• swell
• expand

Antonyms:

• contract
• shrink

Meaning: Active during the day.

Part of speech: adjective

Example: Humans are diurnal creatures.

Category: Biology

Synonyms: daily

Antonyms: nocturnal

Meaning: Relating to the back or upper side of an animal or object.

Part of speech: adjective

Example: The dorsal fin of the shark is very prominent.

Category: Biology

Synonyms:

• back
• upper

Meaning: A type of bacteria found in the intestines of humans and animals, some strains of which can cause food poisoning.

Part of speech: noun

Example: E coli can be dangerous if ingested in contaminated food.

Category: Biology › Microbiology

Synonyms:

• Escherichia coli
• bacteria

Meaning: A protein that helps tissues return to their original shape after stretching.

Part of speech: noun

Example: Elastin is crucial for the elasticity of skin.

Category: Biology › Biochemistry

Synonyms: protein

Meaning: An internal skeleton found in some animals.

Part of speech: noun

Example: Humans have an endoskeleton made of bones.

Category: Biology › Anatomy

Synonyms:

• internal skeleton
• bone structure

Meaning: The part of a seed that provides nutrition.

Part of speech: noun

Example: The endosperm is crucial for the seed's development.

Category: Biology › Botany

Synonyms:

• seed nutrition
• food reserve

Meaning: The period of sexual receptivity in female mammals.

Part of speech: noun

Example: The dog was in estrus and ready to mate.

Category: Biology › Reproductive Biology

Synonyms:

• heat
• rut

Meaning: Waste matter discharged from the bowels; feces.

Part of speech: noun

Example: The dog left excrement on the lawn.

Category: Biology

Synonyms:

• feces
• stool

Meaning: An abnormal outgrowth or enlargement.

Part of speech: noun

Example: The plant had an excrescence that looked unusual.

Category: Biology

Synonyms:

• growth
• outgrowth

Meaning: Waste matter, especially feces.

Part of speech: noun

Example: The study focused on the analysis of animal excreta.

Category: Biology

Synonyms:

• waste
• refuse

Meaning: To eliminate waste from the body.

Part of speech: verb

Example: The kidneys excrete waste products from the blood.

Category: Biology

Synonyms:

• eliminate
• expel

Meaning: Relating to the process of excretion.

Part of speech: adjective

Example: The excretory system removes waste from the body.

Category: Biology

Synonyms:

• eliminative
• waste-removing

Meaning: The animals of a particular region or period.

Part of speech: noun

Example: The fauna of Australia includes kangaroos.

Category: Biology › Zoology

Synonyms:

• wildlife
• animal life

Meaning: Capable of producing an abundance of offspring or new growth.

Part of speech: adjective

Example: The fecund soil produced a rich harvest.

Category: Biology › Reproduction

Synonyms:

• fertile
• productive

Antonyms:

• barren
• infertile