| ECOTOURISTS | • ecotourists n. Plural of ecotourist. • ECOTOURIST n. a tourist who visits areas of ecological interest (typically exotic and often threatened natural environments), esp. to help conservation efforts and observe wildlife. |
| METOESTROUS | • METOESTROUS adj. relating to the metoestrus, the period in the oestrous cycle following oestrus, characterized by lack of sexual activity, also METESTROUS. |
| ORTHOEPISTS | • orthoepists n. Plural of orthoepist. • orthoëpists n. Plural of orthoëpist. • ORTHOEPIST n. one who is skilled in orthoepy. |
| PHOTORESIST | • photoresist n. A light-sensitive film used in photolithography and photoengraving. • PHOTORESIST n. an organic material that polymerizes on exposure to ultraviolet light and in that form resists attack by acids and solvents. |
| POSTMORTEMS | • postmortems n. Plural of postmortem. • post-mortems n. Plural of post-mortem. • post␣mortems n. Plural of post mortem. |
| PROTOSTELES | • protosteles n. Plural of protostele. • PROTOSTELE n. a stele in which the vascular tissue forms a solid core, with centrally placed xylem surrounded by phloem. |
| PROTOSTOMES | • protostomes n. Plural of protostome. • PROTOSTOME n. a major group of bilateral metazoan animals, that includes mollusks and annelids. |
| SCOOTERISTS | • scooterists n. Plural of scooterist. • SCOOTERIST n. one who rides a scooter. |
| SCOTOMETERS | • scotometers n. Plural of scotometer. • SCOTOMETER n. an instrument for detecting defects in the visual field. |
| SITOSTEROLS | • sitosterols n. Plural of sitosterol. • SITOSTEROL n. any of several sterols widespread in plant products. |
| SOUTHERMOST | • southermost adj. Synonym of southernmost. • SOUTHERMOST adj. (obsolete) most southerly, also SOUTHERNMOST, SOUTHMOST. |
| STOCKROUTES | • STOCKROUTE n. in Australia and New Zealand, a right of way for travelling stock. |
| STOREFRONTS | • storefronts n. Plural of storefront. • STOREFRONT n. the front side of a store or store building facing a street. |
| STREETROOMS | • STREETROOM n. space enough in the street. |
| TORPEDOISTS | • torpedoists n. Plural of torpedoist. • TORPEDOIST n. one whose job is to fire torpedoes. |
| TORTFEASORS | • tortfeasors n. Plural of tortfeasor. • TORTFEASOR n. a person guilty of tort, a wrongful act, damage, or injury done willfully. |
| TROUTSTONES | • TROUTSTONE n. a coarse-grained basic igneous rock composed of feldspar speckled with olivine, aka troctolite. |
| ZOOTSUITERS | • zootsuiters n. Plural of zootsuiter. • zoot-suiters n. Plural of zoot-suiter. • ZOOTSUITER n. someone who wears a zoot suit. |