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