Herbalism Terms & Definitions

Herbalism Terms and Definitions

Here is a list of some herbalism terms you may encounter while studying plant medicine. Some terms describe how herbs act in the body, others refer to preparation methods, safety considerations, or traditional frameworks, some are outdated but have influenced modern herbal practices. Understanding these terms makes it much easier to read herb books, follow recommendations, and work with plant medicine.

1. Herbalism

The practice of using plants to support health, resilience, and healing. In Western herbalism, this includes traditional use, empirical observation, and modern research.

2. Medicinal Herb

A plant used specifically for its therapeutic actions, not just for flavor or nutrition. (many are both like say basil, but often are seen as more culinary)

3. Materia Medica

A reference system that documents herbs, including their actions, preparations, safety considerations, and historical use.

See my blog post on the history of herbalism with links to the old herbal texts

4. Herbal Action

The primary way an herb affects the body, such as calming, stimulating, drying, or cooling.

5. Nervine

An herb that supports the nervous system, often used for stress, tension, sleep issues, or emotional strain.

6. Adaptogen

An herb that helps the body adapt to stress by supporting balance across multiple systems, especially the nervous and endocrine systems.

7. Tonic

An herb taken regularly over time to strengthen or nourish a body system rather than create a quick effect.

8. Alterative

An herb that supports gradual metabolic or eliminative change, often used for skin, lymph, or chronic conditions.

9. Astringent

An herb that tightens tissues and reduces excess discharge, often used for diarrhea, weeping skin, hemorrhoids, or bleeding.

10. Demulcent

An herb rich in mucilage that soothes irritated or inflamed tissues, especially in the gut, throat, or urinary tract.

11. Vulnerary

An herb that supports tissue repair and wound healing. We often use these in topical preparations and salves.

12. Carminative

A warming herb that is often employed to aid digestion – easing gas, bloating, and digestive discomfort.

13. Diaphoretic

An herb that promotes sweating, often used during fever or early illness. This can also be helpful emotionally when you need to defuse hot emotions.

14. Diuretic

An herb that increases urine output to support fluid balance and waste elimination.

15. Antispasmodic

An herb that relaxes muscle tension or spasms, including digestive or uterine cramping.

16. Sedative

An herb that promotes sleep through various actions

17. Stimulant

An herb that increases activity in a system, such as circulation, digestion, or alertness. This does not always mean caffeine style stimulation.

18. Bitter

An herb that stimulates digestion and liver function through bitter taste receptors.

19. Hepatic

An herb that supports liver function.

20. Cholagogue

An herb that promotes bile flow from the gallbladder.

21. Lymphagogue

An herb that supports lymphatic movement and drainage.

22. Expectorant

An herb that helps clear mucus from the respiratory tract.

23. Antimicrobial

An herb that inhibits the growth of bacteria, fungi, or other microorganisms.

24. Herbal Preparation

The method used to extract or prepare an herb for use, such as tea, tincture, or salve.

25. Infusion

A water-based extraction made by steeping soft plant material like leaves or flowers.

26. Decoction

A water-based extraction made by simmering tougher plant material like roots, bark, or seeds.

27. Tincture

An alcohol-based extraction that preserves and concentrates an herb’s constituents.

28. Glycerite

A glycerin-based extraction, often used when alcohol is not appropriate.

29. Oxymel

A preparation made with vinegar and honey, commonly used for respiratory or digestive herbs.

30. Poultice

A topical herbal preparation – typically moistened herbs wrapped in cloth (or just wadded together), applied directly to the skin.

31. Salve

An oil-based topical preparation usually thickened with beeswax

32. Herbal Oil

An infusion of herbs into oil, often used for topical applications.

33. Constituent

A chemical compound naturally present in a plant that contributes to its action.

34. Phytochemistry

The study of plant constituents and their effects on the body.

35. Synergy

The way multiple constituents in a plant work together to create an effect greater than any single compound. (The often missing piece to pharmaceuticals)

36. Whole-Plant Medicine

An approach that values the full chemical and energetic complexity of a plant rather than isolated compounds.

37. Energetics

A framework describing how herbs affect qualities like temperature, moisture, and movement in the body. Many cultures have their own systems of energetics.

38. Warming Herb

An herb that increases circulation or metabolic activity.

39. Cooling Herb

An herb that reduces heat, inflammation, or excess stimulation.

40. Drying Herb

An herb that reduces excess fluid or mucus.

41. Moistening Herb

An herb that adds lubrication or hydration to tissues.

42. Pattern Recognition

The process of identifying recurring symptom clusters rather than treating isolated complaints.

43. Acute Use

Short-term herbal use for immediate conditions like colds or injuries.

44. Safety Profile

An overview of an herb’s risks, contraindications, and appropriate use.

45. Contraindication

A situation where an herb should not be used due to health conditions, medications, or life stages.

46. Herb-Drug Interaction

A potential interaction between an herb and a pharmaceutical medication, often having to do with the herbs action working against or strengthening the drugs function OR the herb’s impact on how quickly the dug is metabolized.

47. Standardization

The process of adjusting an extract to contain a consistent level of specific constituents. This is often done in a lab. Home preparations are rarely able to create standardized extracts.

48. Ethical Sourcing

Harvesting or purchasing herbs in a way that protects ecosystems and communities. This means practices that consider the wellbeing of the plant, the land, and the people who are growing and harvesting.

49. Wildcrafting

Harvesting plants from their natural environment with attention to sustainability. Wildcrafted plants are often more potent but should be harvested with ethical harvesting practices and in accordance with local laws.

50. Cultivated Herb

An herb grown in an herb farm or garden rather than harvested from the wild.

51. Fresh Plant Tincture

A tincture made from freshly harvested plant material instead of dried plant matter this is often more potent but certain plants water content is too high to make shelf stable tinctures and therefore must be dried or wilted first.

52. Dried Herb

Plant material that has been dried for storage and later use – ideally at a low heat to preserve medicinal compounds.

53. Shelf Life

The length of time an herbal preparation remains effective and safe to use.

54. Organoleptics

Evaluating herbs using taste, smell, sight, and texture. Your lived, physical experiences of a plant.

55. Empirical Use

Herbal knowledge based on observation and experience over time.

56. Clinical Herbalism

The professional practice of herbalism by someone trained in advanced individualized assessment, safety screening, and ongoing support.