Meaning: Occurring every two years.

Part of speech: adjective

Example: The biennial festival attracts visitors from all over.

Category: Events

Meaning: A title often used to refer to a leader or important figure.

Part of speech: noun

Example: The Big Chief of the tribe made an important announcement.

Category: Culture

Meaning: The larger end of an object, often used in reference to engines.

Part of speech: noun

Example: The big end of the crankshaft needs to be replaced.

Category: Engineering

Meaning: A government that is heavily involved in the economy and social issues.

Part of speech: noun

Example: Some people believe big government is necessary for social welfare.

Category: Politics

Meaning: A person who is very successful or influential in a particular field.

Part of speech: noun

Example: He is a big hitter in the tech industry.

Category: Business

Meaning: A person who is well-known and influential in a college or university setting.

Part of speech: noun

Example: He was the Big Man on Campus during his college years.

Category: Education

Meaning: Having an inflated sense of self-importance.

Part of speech: adjective

Example: His big-headed attitude made him unpopular.

Category: Personality

Meaning: A small, elegant, or highly prized object.

Part of speech: noun

Example: She wore a bijou necklace that sparkled in the light.

Category: Arts › Design

Synonyms:

• gem
• jewel

Meaning: A member of a motorcycle gang, often associated with criminal activity.

Part of speech: noun

Example: The bikie was arrested for illegal activities.

Category: Crime

Synonyms: motorcycle gang member

Meaning: Relating to sounds made with both lips, such as 'p' and 'b'.

Part of speech: adjective

Example: The sounds 'p' and 'b' are bilabial.

Category: Linguistics

Synonyms: lip sounds

Meaning: A property of being symmetrical on both sides.

Part of speech: noun

Example: Many animals exhibit bilateral symmetry.

Category: Science › Biology

Synonyms: symmetry

Meaning: A small, dark blue fruit similar to blueberries.

Part of speech: noun

Example: Bilberries are often used in jams.

Category: Nature › Botany

Synonyms: blueberry

Meaning: The tube that carries bile from the liver to the intestine.

Part of speech: noun

Example: A blockage in the bile duct can cause serious health issues.

Category: Medicine › Anatomy

Synonyms: biliary duct

Meaning: Relating to bile or the bile ducts.

Part of speech: adjective

Example: Biliary diseases can affect digestion.

Category: Medicine › Physiology

Synonyms: bile-related

Meaning: To cheat or defraud someone.

Part of speech: verb

Example: He tried to bilk the investors out of their money.

Category: Crime

Synonyms:

• defraud
• swindle

Antonyms:

• honor
• pay

Meaning: A natural pond or waterhole, often found in Australia.

Part of speech: noun

Example: The billabong was full of fish.

Category: Nature › Geography

Synonyms: waterhole

Meaning: A place where soldiers are lodged temporarily.

Part of speech: noun

Example: The soldiers were assigned to a billet in the town.

Category: Military

Synonyms:

• lodging
• accommodation

Meaning: One part in a billion; the ordinal form of billion.

Part of speech: noun

Example: He finished in the billionth place in the race.

Category: Mathematics

Synonyms:

• 1/1
• 000
• 000
• 000

Meaning: The act of consuming large quantities of alcohol in a short period.

Part of speech: noun

Example: Binge drinking can lead to serious health issues.

Category: Health › Substance Abuse

Synonyms: heavy drinking

Meaning: A mathematical expression consisting of two terms.

Part of speech: noun

Example: The expression 'x + y' is a binomial.

Category: Mathematics

Synonyms: two-term expression

Meaning: Relating to the chemical processes and substances in living organisms.

Part of speech: adjective

Example: Biochemical reactions are essential for life.

Category: Science › Biochemistry

Synonyms: biological

Meaning: The application of engineering principles to biological systems.

Part of speech: noun

Example: Bioengineering has led to advancements in medical devices.

Category: Science › Biomedical Engineering

Synonyms: biomedical engineering

Meaning: A technique that teaches control over physiological functions by providing real-time feedback.

Part of speech: noun

Example: She used biofeedback to manage her stress levels.

Category: Medicine › Therapy

Synonyms: physiological feedback

Meaning: A written account of someone's life; a biography.

Part of speech: noun

Example: The biograph detailed the artist's early years.

Category: Arts › Literature

Synonyms: life story

Meaning: Relating to a person's life.

Part of speech: adjective

Example: The biographical film portrayed the scientist's achievements.

Category: Arts › Literature

Synonyms: life-related

Meaning: An internal mechanism that regulates biological rhythms, such as sleep and wakefulness.

Part of speech: noun

Example: Her biological clock woke her up at the same time every day.

Category: Science › Biology

Synonyms: circadian rhythm

Meaning: A large geographical biotic unit, a major community of plants and animals with similar life forms and environmental conditions.

Part of speech: noun

Example: The rainforest is a diverse biome with many species.

Category: Nature › Ecology

Synonyms: ecosystem

Meaning: The study of the mechanical laws relating to the movement or structure of living organisms.

Part of speech: noun

Example: Biomechanics helps improve athletic performance.

Category: Science › Kinesiology

Synonyms: movement science

Meaning: Relating to the measurement and statistical analysis of people's unique physical and behavioral characteristics.

Part of speech: adjective

Example: Biometric security systems use fingerprints for identification.

Category: Technology › Security

Synonyms: biometric identification

Meaning: The natural cycles of physical, emotional, and intellectual activity in a person.

Part of speech: noun

Example: Understanding your biorhythm can help improve productivity.

Category: Science › Psychology

Synonyms: biological rhythm

Meaning: The global sum of all ecosystems; the zone of life on Earth.

Part of speech: noun

Example: The biosphere is essential for sustaining life.

Category: Nature › Ecology

Synonyms: ecosystem

Meaning: Relating to biotechnology and its applications.

Part of speech: adjective

Example: Biotechnological innovations are changing agriculture.

Category: Science › Biotechnology

Synonyms: biotech-related

Meaning: Relating to or resulting from living things.

Part of speech: adjective

Example: Biotic factors include plants and animals in an ecosystem.

Category: Nature › Ecology

Synonyms: living

Antonyms: abiotic

Meaning: Involving two political parties.

Part of speech: adjective

Example: The bipartisan agreement was a significant step forward.

Category: Politics › Government

Synonyms: cross-party

Meaning: Divided into two parts or groups.

Part of speech: adjective

Example: The bipartite agreement was signed by both parties.

Category: Politics › Government

Synonyms: two-part

Meaning: An animal that walks on two legs.

Part of speech: noun

Example: Humans are bipeds, unlike most mammals.

Category: Science › Biology

Synonyms: two-legged creature

Meaning: Relating to or denoting an animal that uses two legs for walking.

Part of speech: adjective

Example: Bipedal locomotion is common in humans.

Category: Science › Biology

Synonyms: two-legged

Meaning: An incident where a bird collides with an aircraft.

Part of speech: noun

Example: The airport has measures in place to prevent bird strikes.

Category: Aviation › Safety

Synonyms: bird collision

Meaning: Resembling a bird in appearance or behavior.

Part of speech: adjective

Example: The creature had birdlike features and could fly.

Category: Nature › Zoology

Synonyms: avian-like

Meaning: A sticky substance used to catch birds.

Part of speech: noun

Example: Birdlime was historically used in hunting.

Category: Nature › Zoology

Synonyms: bird glue