| A | B |
| -y | state of, quality, act; body, group |
| anth | flower |
| nat | born, birth |
| therm/therm(o) | heat |
| hypo- | under, below |
| chron(o) | time |
| -al | like, related to; an action or process |
| gen | cause, birth, race, produce |
| -ia | condition |
| graph | write, written |
| peri- | around, surrounding |
| meter | to measure |
| path | feeling, disease |
| (at)-ing | related to |
| de- | from, away, down, apart; not |
| geo | Earth, ground |
| -ant | one who, that which; state, quality |
| -ic | like, related to |
| phil | love, loving |
| -logy | study of, science |
| hydr/hydr(o) | water |
| -on | quality, state |
| phon(e) | sound |
| phyt(e) | plant |
| opt | eye, vision |
| meso | middle |
| heli | sun |
| somat | body |
| mesophyte | plant that requires a moderate amount of water |
| perianth | the outer part of a flower |
| mesotherm | plant that requires a moderate degree of heat (botany) |
| perioptic | situated about or surrounding the eyeball (medical) |
| hydrogenic | caused by the action of water (geology) |
| hydropathy | treatment of injury or disease with water (medical) |
| dehydrating | related to taking water from |
| hydrant | device for drawing water |
| perinatal | of, or related to the time immediately before or after birth (medical) |
| hydrograph | diagram of the levels or amount of water flow in a river |
| mesosomatic | related to the middle region of the body of various invertebrates (zoology) |
| hydrophone | receiver for listening to sound transmitted through water |
| hydrothermal | of or related to hot water |
| perihelion | point closes to the sun in a planet's orbit (astronomy) |
| mesophilic | thriving in a moderate environment (biology) |
| thermal | of, or related to heat; caused by heat |
| thermogenic | producing heat (physiology) |
| chronothermal | relating to both time and temperature |
| thermography | recording a visual image of body heat using infrared devices (medical) |
| hydrogeology | study of subsurface water movement through rock |