| CRYPTOGRAPHERS | • cryptographers n. Plural of cryptographer. • CRYPTOGRAPHER n. a specialist in cryptography. |
| DAGUERREOTYPERS | • daguerreotypers n. Plural of daguerreotyper. • DAGUERREOTYPER n. one who develops daguerreotypes, also DAGUERREOTYPIST. |
| HYPERREACTORS | • hyperreactors n. Plural of hyperreactor. • HYPERREACTOR n. one who reacts in the extreme. |
| MICROPYROMETERS | • MICROPYROMETER n. a pyrometer for measuring the temperature of very small objects. |
| PERSPIRATORY | • perspiratory adj. (Dated) Of or pertaining to perspiration. • PERSPIRATORY adj. of, relating to, secreting, or inducing perspiration. |
| PORTRAYERS | • portrayers n. Plural of portrayer. • PORTRAYER n. one who portrays. |
| PRESERVATORY | • preservatory n. (Obsolete) A preservative. • preservatory n. (Obsolete) A room or apparatus in which perishable things can be preserved without decay. • preservatory adj. Preservative. |
| PROCRASTINATORY | • procrastinatory adj. Of or pertaining to procrastination. • PROCRASTINATORY adj. tending to procrastinate, also PROCRASTINATIVE. |
| PROTOMARTYRS | • protomartyrs n. Plural of protomartyr. • PROTOMARTYR n. the first martyr in any cause, esp. St Stephen. |
| PROTOPORPHYRINS | • protoporphyrins n. Plural of protoporphyrin. • PROTOPORPHYRIN n. metal-free porphyrin derived from blood hemin. |
| PYRARGYRITES | • pyrargyrites n. Plural of pyrargyrite. • PYRARGYRITE n. a deep-red to black silver ore. |
| PYROTARTRATES | • pyrotartrates n. Plural of pyrotartrate. • PYROTARTRATE n. a salt of tartaric acid. |
| RESPIRATORY | • respiratory adj. (Relational) Relating to respiration or the organs of respiration; breathing. • RESPIRATORY adj. related to respiration. |
| RESPIROMETRY | • respirometry n. A form of calorimetry that is used to measure the metabolic rate. • RESPIROMETRY n. measurement by respirometer. |
| SUPEREROGATORY | • supererogatory adj. Pertaining to supererogation; doing more than is required, especially with reference to good works in… • SUPEREROGATORY adj. going beyond the call of duty; superfluous. |
| TETRAPYRROLES | • tetrapyrroles n. Plural of tetrapyrrole. • TETRAPYRROLE n. a chemical group consisting of four pyrrole rings joined either in a straight chain or in a ring, as in chlorophyll. |
| TRANSPIRATORY | • transpiratory adj. Of or relating to transpiration. • TRANSPIRATORY adj. relating to transpiration, also TRANSPIRATIONAL. |