| CHAPBOOKS | • chapbooks n. Plural of chapbook. • CHAPBOOK n. a small book or pamphlet containing stories, poems, or religious tracts. | 
| HOLOPLANKTONS | • HOLOPLANKTON n. organisms which remain as plankton throughout their whole life cycle. | 
| KALEIDOPHONES | • kaleidophones n. Plural of kaleidophone. • KALEIDOPHONE n. an instrument for demonstrating sound waves by lines of light. | 
| KENOPHOBIAS | • KENOPHOBIA n. fear of empty spaces. | 
| OMPHALOSKEPSES | • OMPHALOSKEPSIS n. the contemplation of one's own navel to induce a mental trance. | 
| OMPHALOSKEPSIS | • omphaloskepsis n. Contemplation of or meditation upon one’s navel; navel-gazing. • omphaloskepsis n. (Figuratively) Ratiocination to the point of self-absorption. • OMPHALOSKEPSIS n. the contemplation of one's own navel to induce a mental trance. | 
| ORTHOPINAKOIDS | • ORTHOPINAKOID n. in monoclinic crystals, a form consisting of two faces parallel to the orthodiagonal and the vertical axis. | 
| PHENAKISTOSCOPE | • phenakistoscope n. An early animation device consisting of a disc or drum which rotated, showing successive images through… • phénakistoscope n. Alternative form of phenakistoscope. • PHENAKISTOSCOPE n. an early form of cinematograph. | 
| PHOSPHOKINASE | • phosphokinase n. (Biochemistry) kinase. • PHOSPHOKINASE n. a kind of enzyme, aka kinase. | 
| PHOSPHOKINASES | • phosphokinases n. Plural of phosphokinase. • PHOSPHOKINASE n. a kind of enzyme, aka kinase. | 
| PHOTOMASK | • photomask n. A transparent quartz block marked with many high-resolution images; a series of them are used in the… • PHOTOMASK n. a mask used in photography. | 
| PHOTOMASKS | • photomasks n. Plural of photomask. • PHOTOMASK n. a mask used in photography. | 
| PHYTOPLANKTONS | • phytoplanktons n. Plural of phytoplankton. • PHYTOPLANKTON n. vegetable plankton, that includes diatoms, desmids, and dinoflagellates. | 
| REAPHOOKS | • reaphooks n. Plural of reaphook. • reap␣hooks n. Plural of reap hook. • REAPHOOK n. an implement used in reaping. | 
| TOKOPHOBIAS | • TOKOPHOBIA n. an abnormal fear of giving birth or becoming pregnant. |