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400 Must Have Words for the TOEFL LESSON 8 – Energy Vocabulary Test

400 Must Have Words for the TOEFL LESSON 8 - Energy Vocabulary Test

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Word List

combustion [kəmˈbəstʃ(ə)n] n.

The process of burning

 When air quality is poor, combustion of materials in a fireplace is prohibited.

Usage tips     Combustion is often followed by of.

Parts of speech     combust v., combustible adj.

component [kəmˈpoʊnənt] n.

One part of a system or whole

 Their home theater system has a number of separate components.

Usage tips     Component is often followed or preceded by of.

convey [kənˈveɪ] v.

To transport from one place to another; to transmit or make known

 A messenger conveyed the prince’s letter to the commander of the army.

Parts of speech     conveyance n., conveyor n.

discretely [dɪˈskriːtli] adv.

Separately; distinctly

 In order to understand how the engine worked,each component needed to be studied discretely.

Parts of speech     discrete adj.

nucleus [ˈn(j)ukliəs] n.

A central or essential part around which other parts are gathered; a core

 The nucleus of many European cities is the town square.

Usage tips     Nucleus is often followed by of.

Parts of speech     nuclear adj.

permeate [ˈpərmiˌeɪt] v.

To spread or flow throughout; to pass through or penetrate

 The smell of cooking permeated the entire apartment building.

Parts of speech     permeation n.

rotate [ˈroʊˌteɪt] v.

To turn around; to take turns in sequence

 The planet rotates on its axis once every 14 Earth days.

Parts of speech     rotation n.

solar [ˈsoʊlər] adj.

Of,or relating to, the sun

 The ancient society kept time with a solar calendar.

source [sɔrs] n.

The point of origin or creation

 The reporter was unable to identify the source of the information for his story.

Parts of speech     source v.

trigger [ˈtrɪɡər] v.

To set off or initiate

 I was certain any mention of politics would trigger a big argument.

Parts of speech     trigger n.

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