| A | B |
| Capillary Action | The ability of a narrow tube to draw a liquid upwards against the force of gravity. |
| Whorls | A form that coils or spirals; a curl or swirl. One of the circular ridges or convolutions of a fingerprint. |
| Chemical Elements | Any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter. |
| Dermal Ridges | This is the original meaning of fingerprint. |
| DNA | A nucleic acid that carries the genetic information in the cell and is capable of self-replication. The initials are an acronym for deoxyribonucleic acid. |
| Evidence | A thing or things helpful in forming a conclusion or judgment. |
| Follicle | A spherical mass of cells usually containing a cavity. |
| Individualization | In this application to make a positive connection between an object and a person. |
| Iris | The pigmented, round, contractile membrane of the eye, suspended between the cornea and lens and perforated by the pupil. It regulates the amount of light entering the eye. |
| Isopropyl Alcohol | A clear, colorless, flammable, mobile liquid, (CH3)2CHOH, used in antifreeze compounds, in lotions and cosmetics, and as a solvent for gums, shellac, and essential oils. |
| Linen | Thread made from fibers of the flax plant. Cloth is woven from this thread. |
| Perpetrator | In this application the person who commits or is responsible for a crime. |
| Prevalent | Widely or commonly occurring, existing, accepted, or practiced. |
| Solvent | Substances (usually liquid) capable of dissolving or dispersing one or more other substances. |
| Trace Evidence | Physical evidence that results from the transfer of small quantities of materials (e.g., hair, textile fibers, paint chips, glass fragments, gunshot residue particles). |
| Chemical Compound | A substance formed by chemical union of two or more elements or ingredients in definite proportion by weight. For example, dihydrogen monoxide (water, ) is a compound composed of two hydrogen atoms for every oxygen atom. |