| Set | No | Word | PoS | Pronunciation | Definition |
|---|---|---|---|---|---|
| 5 | 81 | epidemic | adj | /ɛ•pɪ•dɛ•mɪk/ | a disease affecting many people |
| 5 | 82 | inversion | n | /ɪn•vɚ•ʃən/ | a change in position of things so they become the opposite |
| 5 | 83 | irrelevant | adj | /ɪ•rɛ•lɪ•vənt/ | not important, not related to the topic |
| 5 | 84 | epidemiology | n | /ɛ•pə•diː•mi•ɑː•lə•ʤi/ | the science of how diseases spread |
| 5 | 85 | infectious | adj | /ɪn•fɛk•ʃəs/ | capable of causing infection, by the spreading of a bacteria or virus to others |
| 5 | 86 | trans | prefix | /trænz/ | a prefix meaning 'across', 'through' or 'changing thoroughly' |
| 5 | 87 | irrigation | n | /ɪ•rɪ•gɛɪ•ʃən/ | supplying lands with water using pipes or other artificial methods |
| 5 | 88 | rehabilitation | n | /riː•ə•bɪ•lɪ•tɛɪ•ʃən/ | a scheme to help someone who has been ill or in prison to return to a healthy, independent, and useful life |
| 5 | 89 | optimum | adj | /ɑp•tɪ•məm/ | the best or most desirable |
| 5 | 90 | kidney | n | /kɪd•nɪ/ | an organ in the body that cleans the blood |
| 5 | 91 | synthetic | adj | /sɪn•θɛ•tɪk/ | not natural; made from artificial materials |
| 5 | 92 | hepatitis | n | /hɛpə'taɪtɪs/ | a disease of the liver that causes inflammation, yellow skin and a fever |
| 5 | 93 | ton | n | /Y/ | a unit of weight equal to 907 kilograms |
| 5 | 94 | bracket | n | /bræ•kɪt/ | a 90 degree piece of metal used to support a wall shelf |
| 5 | 95 | elasticity | n | /ɛ•læs•tɪ•sɪ•tɪ/ | the ability to stretch easily and then quickly return to the original shape |
| 5 | 96 | contradictory | adj | /kɑn•trə•dɪk•tə•rɪ/ | containing information, statements, or beliefs that do not agree with one another |
| 5 | 97 | elastic | adj | /ɪ•læs•tɪk/ | able to return to original shape or size after stretching |
| 5 | 98 | machinery | n | /mə•ʃiː•nə•rɪ/ | machines in general |
| 5 | 99 | dictate | v | /dɪk•tɛɪt/ | to speak while another person (or computer) writes the words down |
| 5 | 100 | enforcement | n | /ɪn•foɚs•mənt/ | the act or process of making sure that rules are followed |