| A | B |
| geophyte | a plant that grows below the earth's surface, such as a bulb, tuber, or corm |
| hydrophyte | a plant that grows in water, or very moist ground, such as lotus, cattail, and water lily |
| hyper- | Root: over, above, excessive, beyond |
| hyperactive | inclined to do excessively |
| hyperextend | to stretch out beyond the normal range |
| hypersensitive | inclined to excessive feeling through the senses; easily pained or annoyed; abnormally allergic |
| hypertension | the condition of stretching excessively, such as abnormally high blood pressure |
| hyperthermia | the condition of above normal body temperature |
| neo- | Root: new |
| neomorph | a new structure that does not come from a similar structure, such as a mutant gene |
| neonate | a newly born baby |
| neonatology | the study of the development of newly born babies |
| neophobia | the fear of anything new |
| neophyte | a new plant; one who is new to any subject; a beginner or novice |
| phytocide | a substance that kills plants |
| phyto-, -phyte | Root: a plant / to grow |
| saprophyte | a plant that lives on decaying matter |
| tropophyte | a plant capable of adapting or changing in response to climatic conditions |