Ready to ramp up your knowledge of science words beginning with R? From the minuscule reactions that happen in every cell to the vast realms of research, R is rich with scientific terms.
This guide will be a reliable resource, revealing each R-word in the simplest terms to make the realm of science more relatable for you.
Science Words That Start With R
Here is the list of common science words with R;
- Radiation
- Reaction
- Reproduction
- Respiration
- Ribosome
- Resistance
- Redox
- RNA
- Refraction
- Reactant
- Radioactive
- Recessive
- Resonance
- Retrovirus
- Replication
- Receptor
- Rhythm
- Rheology
- Renal
- Regeneration
- Radial
- Radiometer
- Radiology
- Ribonucleotide
- Ribonuclease
- Rheumatoid
- Ruminant
- Retrograde
- Retrotransposon
- Reticulum
- Radon
- Renin
- Rosetta
- Rhizosphere
- Renormalization
- Retroviral
- Reagent
- Red blood cell
- Ribosomal RNA (rRNA)
- Rubisco
- Renal failure
- Ribozyme
- Recombination
- Reaction rate
- Radioisotope
- Ribonucleic acid
- Radiography
- Ribose
- Repressor
- Redox reaction
- Radiofrequency
- Reproductive system
- Resting potential
- Renal artery
- Retroviral vector
- Rumen
- RNA interference
- Radial symmetry
- Renal tubule
- Reaction mechanism
- Rheumatology
- Rickettsia
- Radiolabeling
- Ruminant digestion
- Repressor protein
- Replication fork
- Retina
- Reactivity
- Reproductive organ
- Rh factor
- Ribosomal subunit
- Radiopaque
- Rhabdomyosarcoma
- Radiopharmaceutical
- Random sample
- Resting state
- Radioimmunoassay
- Rubella
- Replicative form
- Refractive index
- Ribonucleotide reductase
- RNA polymerase
- Renal cortex
- Regenerative medicine
- Root
- Renal pelvis
- Reticular formation
- Retrospective study
- Radiotherapy
- Radial velocity
- Rhizome
- Reverse transcription
- Recessive allele
- Respiratory system
- Renal function
- Rhodopsin
- Rumen fermentation
- Rhythmogenesis
- Ribozygosity
Related: Science Words A to Z
Explore More Science Words:
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
Science Words With R (By Grade)
4th Grade Science Words With R:
- Rainforest
- Reptile
- Reflection
- Rotation
- Root
- Rock
- Rust
- River
- Rod
- Repel
- Ridge
- Reservoir
- Rainfall
- Recycle
- Reef
- Rodent
- Respiration
- Ruler
- Radiate
- Ripple
5th Grade Science Words With R:
- Renewable Resource
- Resistor
- Resistance
- Reproduction
- Radiant Energy
- Revolution
- Relative Density
- Reactant
- Reflection
- Refraction
- Respiratory System
- Radiant
- Rodentia
- Radiology
- Radial Symmetry
- Radicle
- Rain Gauge
- Range
- Rate
- Ratio
6th Grade Science Words With R:
- Radioactive Decay
- Renewable Energy
- Recessive Trait
- Refractive Index
- Regeneration
- Relative Age
- Respiration
- Ribosome
- Rock Cycle
- Radiometric Dating
- Rutherford Model
- Rusting
- Rhizome
- Rodenticide
- Radiant Energy
- Reduction
- Reactivity
- Recombinant DNA
- Red Giant
- Revolve
7th Grade Science Words With R:
- Radiation
- Recombination
- Reciprocal
- Redshift
- Refractometer
- Relative Motion
- Replicon
- Reptilia
- Resource Management
- Retina
- Rheology
- Ribonucleic Acid (RNA)
- River Basin
- RNA Polymerase
- Rock Strata
- Radionuclide
- Recessive Allele
- Red Blood Cell
- Regolith
- Relay Neuron
8th Grade Science Words With R:
- Radioactivity
- Reactants
- Real Image
- Reciprocal Cross
- Recrystallization
- Redox Reaction
- Reductionism
- Relative Velocity
- Renewable Resources
- Repolarization
- Reticulum
- Retrovirus
- Rhyolite
- Ribosomal RNA
- Right Ascension
- Ring of Fire
- RNA Sequencing
- Roche Limit
- Rock Salt
- Rodinia
Science Words Starting With R (By Subject)
Physics Words That Start With R:
- Rayleigh Scattering
- Reactance
- Reactor
- Reciprocal Lattice
- Redshift
- Refraction
- Relativity
- Resistance
- Resonance
- Rest Mass
- Reynolds Number
- Rigid Body
- Rontgen
- Rotary Motion
- Rotational Inertia
- Rutherford Scattering
- Rydberg Constant
- Radiative Transfer
- Range Finder
- Rarefaction
Chemistry Words That Start With R:
- Racemic Mixture
- Radical
- Raoult’s Law
- Rate Constant
- Rate of Reaction
- Reactivity Series
- Recrystallization
- Redox
- Reducing Agent
- Reflux
- Relative Atomic Mass
- Relative Formula Mass
- Reagent
- Reversible Reaction
- Rhenium
- Rhodium
- Ribose
- Rutherfordium
- Radiochemistry
- Reaction Mechanism
Biology Words That Start With R:
- Recessive
- Recombinant
- Red Algae
- Reflex
- Regeneration
- Regulatory Gene
- Riboflavin
- Ribosome
- RNA
- Root Hair Cell
- Rough Endoplasmic Reticulum
- Ruminant
- Radula
- Ray-finned Fish
- Receptor
- Reproductive System
- Restriction Enzyme
- Retrograde Motion
- Rhizosphere
- Rickets
Math Words That Start With R:
- Radius
- Range
- Rational Number
- Ratio
- Ray
- Real Number
- Reciprocal
- Rectangle
- Rectangular Prism
- Recursion
- Reducing Fraction
- Reflection
- Reflex Angle
- Region
- Regression
- Regular Polygon
- Relative Frequency
- Remainder
- Repeated Multiplication
- Rhombus
Physical Science Words With R:
- Radio Wave
- Reactivity
- Refractive Index
- Relative Humidity
- Resistivity
- Resolution
- Rest Energy
- Rocketry
- Radial Velocity
- Rare Earth Metals
- Reactive Intermediate
- Reagent
- Real Gas
- Recoil
- Reducing Atmosphere
- Refraction
- Relative Atomic Mass
- Relative Error
- Reluctance
- Remanence
- Repulsion
- Resonant Frequency
- Rest Energy
- Reversible Process
- Rigid Body Dynamics
- Rocket Propulsion
- Roentgen Rays
- Rolling Friction
- Root Mean Square
- Rotational Kinetic Energy
- Rotational Symmetry
- Roughness
- Rubber Elasticity
- Rutherford Backscattering Spectrometry
- Rydberg Formula
- Radiant Flux
Scientific Words With R:
- Radiocarbon Dating
- Radiography
- Radiology
- Radionuclide
- Random Error
- Range of Tolerance
- Rational Function
- Receptor
- Reciprocal Altruism
- Recombinant DNA
- Red Giant Star
- Red Tide
- Reduction Potential
- Refraction Test
- Regenerative Medicine
- Regular Reflection
- Relative Permeability
- Remote Sensing
- Repetitive DNA
- Reproductive Cloning
- Research Design
- Resonance Structure
- Restriction Mapping
- Retroreflection
- Reverse Osmosis
Forensic Words with R:
- Ransomware
- Rap Sheet
- Reactionary Gap
- Readily Combustible Material
- Real Evidence
- Reasonable Doubt
- Rebuttal Witness
- Reconstruction Patterns
- Recrystallization
- Red Blood Cell Analysis
- Refraction
- Regional Autopsy
- Rehydration Techniques
- Relative Direction
- Remote Sensing
- Residue Analysis
- Resistivity Imaging
- Retinal Scan
- Retraction
- Ridge Characteristics
- Ridge Count
- Ridge Pattern
- Rigor Mortis
- RFLP Analysis
- Roadblock Eviction
Science Words with R and Their Meanings:
- Radiation: Emission of energy as electromagnetic waves.
- Reactor: Device for initiating and controlling nuclear reactions.
- Recombination: Genetic process of rearranging DNA sequences.
- Refraction: Bending of light as it passes mediums.
- Regeneration: Process of renewal or restoration of tissues.
- Relativity: Einstein’s theory about time and space.
- Respiration: Process of inhaling and exhaling; breathing.
- Ribosome: Cell structure where protein synthesis occurs.
- Rust: Oxidation of iron producing reddish flaky coating.
- Radiology: Medical study and use of X-rays.
- Reptile: Cold-blooded vertebrate with scales or bony plates.
- Rheology: Study of flow and deformation characteristics.
- Rotational: Relating to or causing rotation.
- Rickets: Disease caused by vitamin D deficiency.
- Rheostat: Device for regulating an electric current.
- Radiosonde: Instrument for atmospheric measurements, sent into air.
- Recrystallization: Process of forming new crystal structures.
- Retrograde: Movement in a backward or opposite direction.
- RNA: Ribonucleic acid, important for genetic coding.
- Radial: Arranged like rays or radii.
- Radian: Unit of angular measure in mathematics.
- Radiocarbon: Radioactive isotope of carbon in dating.
- Resistor: Electronic component that resists electric current.
- Refractory: Material resistant to heat or wear.
- Rheumatoid: Relating to inflammation of joints (arthritis).
- Ruminant: Mammals that chew cud regurgitated from the rumen.
- Redshift: Displacement of spectral lines toward red wavelengths.
- Reagent: Substance used in a chemical reaction.
- Rhizome: Continuously growing horizontal underground stem.
- Radiometer: Instrument for detecting or measuring radiation.
