

Plants are made of organic matter.
[ˈplænts ər ˈmeɪd əv ɔrˈɡænɪk ˈmætər.]
The filter removes solid matter from the water.
[ðə ˈfɪltər rɪˈmuvz ˈsɑləd ˈmætər frəm ðə ˈwɔtər.]
There's some strange black matter inside the machine.
[ˈðɛrz ˈsəm ˈstreɪndʒ ˈblæk ˈmætər ɪnˈsaɪd ðə məˈʃin.]
"matter" is in the lesson "Manufacture" (Level 37), along with 14 other useful words. LinDuo has 180 topic lessons like this one, 2,375 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.