Atlantis–attached Vocabulary (A Words) – Meanings & Synonyms

Atlantis

MythologyC2

Meaning: A legendary island mentioned in ancient Greek mythology, often associated with advanced civilization.

Part of speech: noun

Example: Many stories have been told about the lost city of Atlantis.

Category: Mythology

Synonyms: mythical island

atlas

GeographyB1

Meaning: A book of maps or charts.

Part of speech: noun

Example: I used an atlas to find the best route for our road trip.

Category: Geography

Synonyms:

map book
chart book

ATM

FinanceA2

Meaning: Automated Teller Machine; a machine that allows people to withdraw cash and perform banking transactions.

Part of speech: noun

Example: I need to find an ATM to withdraw some money.

Category: Finance

Synonyms:

cash machine
bank machine

ATM Card

FinanceA2

Meaning: A card used to access an ATM for banking transactions.

Part of speech: noun

Example: Don't forget your ATM card when you go to the bank.

Category: Finance

Synonyms:

debit card
cash card

atmosphere

ScienceB1

Meaning: The envelope of gases surrounding the Earth or another planet.

Part of speech: noun

Example: The atmosphere protects us from harmful space radiation.

Category: Science

Meaning 2: The mood or feeling in a particular environment.

Example: The restaurant had a cozy atmosphere.

Synonyms:

air
environment

Antonyms:

vacuum
emptiness

atmospheric

ScienceC1

Meaning: Relating to the atmosphere.

Part of speech: adjective

Example: Atmospheric pressure affects weather patterns.

Category: Science

Synonyms:

airborne
aerial

atmospherics

ScienceC2

Meaning: The study of the atmosphere and its phenomena.

Part of speech: noun

Example: Atmospherics can help predict weather changes.

Category: Science

atoll

NatureC1

Meaning: A ring-shaped coral reef, island, or series of islets.

Part of speech: noun

Example: The atoll is home to diverse marine life.

Category: Nature

Synonyms: coral island

atom

ScienceB1

Meaning: The smallest unit of a chemical element, consisting of a nucleus surrounded by electrons.

Part of speech: noun

Example: An atom is made up of protons, neutrons, and electrons.

Category: Science › Chemistry

Synonyms:

particle
molecule

atom bomb

ScienceC2

Meaning: A bomb that uses nuclear reactions to release a massive amount of energy.

Part of speech: noun

Example: The atom bomb was developed during World War II.

Category: Science › Physics

Synonyms: nuclear bomb

atomic

ScienceB2

Meaning: Relating to atoms or atomic energy.

Part of speech: adjective

Example: Atomic energy can be harnessed for power.

Category: Science › Physics

Synonyms:

nuclear
subatomic

atomic clock

ScienceC2

Meaning: A clock that uses the vibrations of atoms to measure time with high precision.

Part of speech: noun

Example: An atomic clock is used to keep accurate time in GPS systems.

Category: Science › Physics

Synonyms: precision clock

atomic mass

ScienceC2

Meaning: The mass of an atom, typically expressed in atomic mass units (amu).

Part of speech: noun

Example: The atomic mass of carbon is approximately 12 amu.

Category: Science › Chemistry

Synonyms: atomic weight

atomic number

ScienceC2

Meaning: The number of protons in the nucleus of an atom, which determines the element's identity.

Part of speech: noun

Example: The atomic number of hydrogen is 1.

Category: Science › Chemistry

atomic spectrum

ScienceC2

Meaning: The spectrum of frequencies of electromagnetic radiation emitted by an atom.

Part of speech: noun

Example: The atomic spectrum can be used to identify elements.

Category: Science › Physics

atomic theory

ScienceC2

Meaning: The theory that matter is composed of discrete units called atoms.

Part of speech: noun

Example: Atomic theory is fundamental to modern chemistry.

Category: Science › Chemistry

Synonyms: atomic model

atomic weight

ScienceC2

Meaning: The average mass of an element's atoms, usually expressed in atomic mass units (amu).

Part of speech: noun

Example: The atomic weight of oxygen is approximately 16 amu.

Category: Science › Chemistry

Synonyms: atomic mass

atomicity

ScienceC2

Meaning: The number of atoms in a molecule or the property of being atomic.

Part of speech: noun

Example: Atomicity is important in understanding molecular structures.

Category: Science › Chemistry

atomism

ScienceC2

Meaning: The theory that matter is composed of discrete units called atoms.

Part of speech: noun

Example: Atomism has been a fundamental concept in science.

Category: Science › Chemistry

Synonyms: atomic theory

atomize

ScienceC2

Meaning: To break down into atoms or smaller particles.

Part of speech: verb

Example: The scientist aimed to atomize the substance for analysis.

Category: Science › Chemistry

Synonyms:

fragment
disintegrate

atomizer

GeneralC1

Meaning: A device that converts a liquid into a fine spray or mist.

Part of speech: noun

Example: She used an atomizer to apply perfume.

Category: General

Synonyms:

sprayer
mist maker

atonal

ArtsC2

Meaning: Not having a key or tonal center; lacking a tonal quality.

Part of speech: adjective

Example: Atonal music can be challenging to listen to.

Category: Arts › Music

Synonyms: non-tonal

Antonyms:

tonal
melodic

atonality

ArtsC2

Meaning: The absence of a tonal center in music; a characteristic of atonal music.

Part of speech: noun

Example: Atonality is a key feature of some modern compositions.

Category: Arts › Music

Synonyms: non-tonality

atone

GeneralC2

Meaning: To make amends or reparation for a wrongdoing.

Part of speech: verb

Example: He tried to atone for his mistakes by helping others.

Category: General

Synonyms:

redeem
make amends

Antonyms:

offend
wrong

atonement

GeneralC2

Meaning: Reparation for a wrong or injury; the act of making amends.

Part of speech: noun

Example: He sought atonement for his past actions.

Category: General

Synonyms:

reparation
redemption

atonic

MedicineC2

Meaning: Lacking normal muscle tone or strength.

Part of speech: adjective

Example: The atonic muscles required therapy to regain strength.

Category: Medicine

Synonyms:

weak
flaccid

Antonyms:

strong
toned

atop

GeneralB2

Meaning: On the top of; above.

Part of speech: preposition

Example: The cat sat atop the fence.

Category: General

Synonyms:

on top of
over

Antonyms:

under
below

atopic

MedicineC2

Meaning: Relating to a genetic tendency to develop allergic reactions.

Part of speech: adjective

Example: Atopic dermatitis is a common skin condition.

Category: Medicine

Synonyms: allergic

-ator

GeneralB2

Meaning: A suffix used to form nouns indicating a person or thing that performs a specific action.

Part of speech: noun

Example: The creator of the project was very talented.

Category: General

Synonyms:

doer
maker

ATP

ScienceC1

Meaning: Adenosine triphosphate; a molecule that carries energy within cells.

Part of speech: noun

Example: ATP is essential for cellular processes.

Category: Science › Biology

Synonyms: energy molecule

at-risk

GeneralB2

Meaning: In danger of harm or loss.

Part of speech: adjective

Example: The program supports at-risk youth.

Category: General

Synonyms:

vulnerable
endangered

Antonyms:

safe
secure

atrium

ArchitectureC1

Meaning: An open-roofed entrance hall or central court in a building.

Part of speech: noun

Example: The atrium was filled with natural light.

Category: Architecture

Synonyms:

courtyard
lobby

atrocious

GeneralC2

Meaning: Extremely bad or unpleasant.

Part of speech: adjective

Example: The service at the restaurant was atrocious.

Category: General

Synonyms:

terrible
awful

Antonyms:

excellent
wonderful

atrocity

PoliticsC2

Meaning: An extremely wicked or cruel act.

Part of speech: noun

Example: The war was marked by numerous atrocities.

Category: Politics › Human Rights

Meaning 2: A shocking or brutal act.

Example: The news reported an atrocity committed against innocent civilians.

Synonyms:

horror
outrage

Antonyms:

goodness
virtue

atrophied

MedicineC1

Meaning: Wasted away or diminished in size or strength.

Part of speech: adjective

Example: His atrophied muscles were a result of years of inactivity.

Category: Medicine › Health

Synonyms:

wasted
shrunken

Antonyms:

developed
strong

atrophy

MedicineC1

Meaning: To waste away or decline in effectiveness.

Part of speech: verb

Example: Muscles can atrophy if not used.

Category: Medicine › Health

Synonyms:

waste
deteriorate

Antonyms:

grow
develop

attaboy

ArtsA2

Meaning: An expression of encouragement or praise.

Part of speech: interjection

Example: You did a great job on that project, attaboy!

Category: Arts › Communication

Synonyms:

well done
good job

attach

TechnologyA2

Meaning: To fasten or join one thing to another.

Part of speech: verb

Example: Please attach the document to your email.

Category: Technology › Computing

Synonyms:

fasten
join

Antonyms:

detach
disconnect

attach case

BusinessB2

Meaning: A case designed to hold and protect attached items.

Part of speech: noun

Example: He carried his laptop in an attach case.

Category: Business › Office Supplies

Synonyms:

briefcase
portfolio

attached

TechnologyB1

Meaning: Joined or connected to something.

Part of speech: adjective

Example: The attached file contains the report.

Category: Technology › Computing

Synonyms:

connected
joined

Antonyms:

detached
separate

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