Discover the fascinating world of science with this comprehensive list of over 100 words that begin with the letter “A.” From astronomy to anatomy, immerse yourself in the diverse realms of astrophysics, biochemistry, and beyond. Unearth the wonders of the scientific alphabet and expand your vocabulary on this exciting journey!
100 Science Words That Start With A
Below are 100 science words that start with a.
- Atom
- Anatomy
- Astrology
- Astrophysics
- Aerodynamics
- Antibody
- Archaeology
- Amino acid
- Acid rain
- Algorithm
- Algae
- Anthropology
- Amplification
- Antigen
- Astronomy
- Amplitude
- Allele
- Avian
- Antibiotic
- Acceleration
- Adaptation
- Artificial intelligence
- Aquatic
- Aerobic
- Axis
- Acidification
- Astronaut
- Accelerometer
- Analytical
- Angular velocity
- Antioxidant
- Autotroph
- Atrophy
- Alveoli
- Asthma
- Atomic mass
- Apoptosis
- Assimilation
- Anion
- Agar
- Amoeba
- Avogadro’s number
- Antimatter
- Atomic structure
- Archaea
- Anemia
- Arthropod
- Anomaly
- Alveolar
- Acidity
- Amino group
- Acid-base
- Actin
- Archeology
- Adhesion
- Acetylcholine
- Antibiotic resistance
- Allelic frequency
- Asymmetry
- Alkalinity
- Atomic nucleus
- Astrobiology
- Aneurysm
- Atherosclerosis
- Atomic force microscope
- Archeological site
- Anode
- Alkaloid
- Aseptic technique
- Angiosperm
- Aerobe
- Axon
- Archaeological excavation
- Amorphous
- Albedo
- Aerobiology
- Asteroid
- Anemometer
- Alkali metals
- Anaerobic
- Anaphase
- Acid-base balance
- Avian influenza
- Alpha particle
- Amplitude modulation
- Astrogeology
- Air pollution
- Archeological dating
- Analytical chemistry
- Algal bloom
- Atomic emission spectroscopy
- Anaerobic respiration
- Acclimation
- Antifreeze
- Anoxic
- Archaeobotany
Related: Science Words A to Z
Science Words That Start With A (By Grade)
Science Words That Start With A (4th Grade):
- Atom
- Acid
- Air
- Animal
- Adaptation
- Astronaut
- Asteroid
- Antibody
- Aquifer
- Amoeba
- Algae
- Astronomy
- Axis
- Acceleration
- Aquatic
- Archaeology
- Anemometer
- Asterism
- Anther
- Arid
Science Words That Start With A (5th Grade):
- Astronomy
- Atmosphere
- Atom
- Axis
- Adaptation
- Amphibian
- Acceleration
- Archaeology
- Acid rain
- Anatomy
- Algae
- Antibiotic
- Aerodynamics
- Amino acid
- Aquatic
- Avalanche
- Avalanche
- Alveoli
- Aardvark
- Amplitude
Science Words That Start With A (6th Grade):
- Acidic
- Aerobic
- Anatomy
- Anthology
- Aorta
- Archeology
- Atmosphere
- Autotroph
- Acceleration
- Abiotic
- Amphibian
- Anemometer
- Antigen
- Asteroid
- Astrobiology
- Avalanche
- Avian
- Axon
- Astrocyte
- Allele
Science Words That Start With A (7th Grade):
- Acceleration
- Adhesion
- Allele
- Alveoli
- Amoeba
- Anaphase
- Anemometer
- Antibody
- Archaeology
- Asexual reproduction
- Asteroid
- Atmosphere
- Atom
- Atomic mass
- Atomic nucleus
- ATP (Adenosine triphosphate)
- Autotroph
- Axon
- Aqueous solution
- Avogadro’s law
Science Words That Start With A (8th Grade):
- Absolute zero
- Acid rain
- Activation energy
- Adaptation
- Aerobic respiration
- Allele frequency
- Amino acid
- Ampere
- Anaerobic respiration
- Anemometer
- Angular momentum
- Antibiotic resistance
- Asexual reproduction
- Asterism
- Astronomical unit
- Atomization
- Atmospheric pressure
- Avogadro’s number
- Axial tilt
- Axon terminal
Science Words Starting With A (By Subject)
Physics Words That Start With A:
- Acceleration
- Angular momentum
- Atom
- Amplitude
- Absorption
- Antiparticle
- Alpha particle
- Astrophysics
- Accelerator
- Action-reaction
- Angular velocity
- Archimedes’ principle
- Atomic nucleus
- Anisotropy
- Adiabatic
- Avogadro’s number
- Ampere
- Air resistance
- Alternating current
- Asymmetry
Chemistry Words That Start With A:
- Atom
- Acid
- Alkali
- Alloy
- Aqueous
- Amino acid
- Activation energy
- Adsorption
- Alkene
- Anion
- Aldehyde
- Amphoteric
- Aromatic
- Acid-base
- Anhydrous
- Alkaline earth metals
- Amide
- Addition reaction
- Alkoxide
- Acidification
Biology Words That Start With A:
- Adaptation
- Allele
- Antibody
- Asexual reproduction
- Anatomy
- Angiosperm
- Autotroph
- Aerobic
- Apoptosis
- Antigen
- Abiotic
- Amoeba
- Archaea
- Antiviral
- Aquatic
- Axon
- Aorta
- Aposematic coloration
- Agglutination
- Anaerobe
Math Words That Start With A:
- Algebra
- Angle
- Area
- Arithmetic
- Axis
- Absolute value
- Asymptote
- Addend
- Amplitude
- Axiom
- Apex
- Abacus
- Adjacency matrix
- Acute angle
- Arithmetic mean
- Arc length
- Annulus
- Alternate interior angles
- Absolute error
- Associative property
Physical Science Words That Start With A
- Atom
- Acceleration
- Amplitude
- Air
- Alpha particle
- Asteroid
- Absorption
- Asthenosphere
- Angular momentum
- Alpha decay
Science Words Beginning with A with Meaning:
- Atom: Basic unit of matter.
- Astronomy: Study of celestial objects and phenomena.
- Antibiotic: Medication to fight bacterial infections.
- Adaptation: Process of adjusting to new conditions.
- Acceleration: Rate of change of velocity.
- Archaeology: Study of human history through artifacts.
- Aerodynamics: Study of airflow around objects.
- Anemia: Condition of low red blood cells.
- Astrobiology: Study of life in the universe.
- Algae: Simple photosynthetic organisms.
- Anatomy: Study of bodily structure.
- Astrolabe: Ancient navigation instrument.
- Amplitude: Maximum displacement in a wave.
- Acidosis: Excess acid in body fluids.
- Anthropology: Study of human societies and cultures.
- Avalanche: Rapid snow or rock movement.
- Antioxidant: Substance that inhibits oxidation.
- Aquifer: Underground water-bearing layer.
- Amino acid: Building block of proteins.
- Astronomy: Study of celestial objects and phenomena.
Explore Other Science Words:
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