How many words are in this list?

This page gives 100 Japanese words on “Science and technology”. The full topic holds 193 in the KoKo app: 77 at the easy level, 67 at the medium level and 49 at the hard level.

Which words should I start with?

With level 1: these are the easiest words of the topic. Move on to level 2 once they come to you without thinking, then to level 3.

How can I remember this Japanese vocabulary?

By seeing each word again at longer and longer intervals, just before you forget it: that is spaced repetition. The KoKo app does it for you and tells you each day which words to review.

Can I print this list or save it as a PDF?

Yes. The “Print the list” button at the top of the page opens your device’s print dialog: choose to save as PDF to keep the 100 words and their translation, with nothing else around them.

Japanese vocabulary: science and technology

Experiment, energy, machine, research: the words of science and technology in Japanese.

Here are 100 Japanese words on “Science and technology”, translated into English and sorted from easiest to hardest.

Level 1: easy 40 words

Japanese	English
酸	acid
分析	analysis
ブラックホール	black hole
計算	calculation
細胞	cell
回路	circuit
導体	conducting material
電流	current
差	difference
発見	discovery
元素	element
指数	exponent
力	force
気体	gas
仮説	hypothesis
器具	instrument
研究室	laboratory
光	light
機械	machine
質量	mass
平均	mean
測定値	measurement
金属	metal
数	number
生物体	organism
進歩	progress
証拠	proof
光線	ray
抵抗	resistance
科学	science
固体	solid
種	species
速さ	speed
ばね	spring
星	star
統計	statistic
和	sum
技術	technique
試験する	to test
重さ	weight

Level 2: medium 35 words

Japanese	English
加速度	acceleration
足し算	addition
広さ	area
原子	atom
燃焼	combustion
曲線	curve
DNA	DNA
工学	engineering
分数	fraction
発電機	generator
重力	gravity
水素	hydrogen
発明	invention
レーザー	laser
行列	matrix
仕組み	mechanism
分子	molecule
光学	optics
酸素	oxygen
特許	patent
確率	probability
試作品	prototype
ロケット	rocket
標本	sample
人工衛星	satellite
センサー	sensor
模擬実験	simulation
スペクトル	spectrum
定理	theorem
論証する	to demonstrate
設計する	to design
再現する	to replicate
変数	variable
波動	wave
波長	wavelength

Level 3: hard 25 words

Japanese	English
代数学	algebra
小惑星	asteroid
ビーカー	beaker
生命工学	biotechnology
沸騰	boiling
円周	circumference
凝結	condensation
核分裂	fission
摩擦	friction
歯車	gear wheel
対数	logarithm
顕微鏡	microscope
ナノテクノロジー	nanotechnology
酸化	oxidation
粒子	particle
周期表	periodic table
ピペット	pipette
滑車	pulley
屈折	refraction
平方根	square root
引き算	subtraction
望遠鏡	telescope
試験管	test tube
変圧器	transformer
無重力	weightlessness

Mini quiz

5 words from this page, picked at random. Find their translation.

Frequently asked questions

How many words are in this list?: This page gives 100 Japanese words on “Science and technology”. The full topic holds 193 in the KoKo app: 77 at the easy level, 67 at the medium level and 49 at the hard level.
Which words should I start with?: With level 1: these are the easiest words of the topic. Move on to level 2 once they come to you without thinking, then to level 3.
How can I remember this Japanese vocabulary?: By seeing each word again at longer and longer intervals, just before you forget it: that is spaced repetition. The KoKo app does it for you and tells you each day which words to review.
Can I print this list or save it as a PDF?: Yes. The “Print the list” button at the top of the page opens your device’s print dialog: choose to save as PDF to keep the 100 words and their translation, with nothing else around them.

How KoKo makes words stick

These lists come from KoKo, the app to learn Japanese vocabulary on iPhone.