10-letter words containing o, p, i, l, a
- spaniolize — to cause to become Spanish
- spark coil — a coil of many turns of insulated wire on an iron core, used for producing sparks.
- sphenoidal — relating to the sphenoid bone
- spheroidal — pertaining to a spheroid or spheroids.
- spoil bank — a bank of excavated refuse or waste earth, as of shale from surface coal mining.
- spoliation — the act or an instance of plundering or despoiling.
- spoliative — blood-diminishing
- spondaical — composed of spondees
- sponsional — relating to, involved in or entering into a sponsion
- spoon nail — an abnormal condition in which the outer surfaces of the nails are concave; koilonychia.
- sporadical — (of similar things or occurrences) appearing or happening at irregular intervals in time; occasional: sporadic renewals of enthusiasm.
- sporicidal — a substance or preparation for killing spores.
- suboptimal — being below an optimal level or standard.
- tetraploid — having a chromosome number that is four times the basic or haploid number.
- tetrapolis — a conglomeration of four cities
- tidal pool — a pool of water remaining on a reef, shore platform, or beach after the tide has receded.
- topazolite — a greenish yellow variety of andradite garnet.
- topicality — the state or quality of being topical.
- topicalize — to introduce as, convert into, or mark as the topic of a sentence.
- topophilia — the love of or emotional connections with place or physical environment
- trail rope — a guide rope on an aerostat.
- trampoline — a sheet, usually of canvas, attached by resilient cords or springs to a horizontal frame several feet above the floor, used by acrobats and gymnasts as a springboard in tumbling.
- trollopian — Anthony, 1815–82, English novelist.
- tropaeolin — any of a number of orange or yellow azo dyes of complex molecular structure.
- trophesial — involving or relating to trophesy
- tropically — pertaining to, characteristic of, occurring in, or inhabiting the tropics, especially the humid tropics: tropical flowers.
- unoptional — left to one's choice; not required or mandatory: Formal dress is optional.
- valparaiso — Spanish Valparaíso [bahl-pah-rah-ee-saw] /ˌbɑl pɑ rɑˈi sɔ/ (Show IPA). a seaport in central Chile.
- vanpooling — the sharing of a van to commute to work
- vapulation — the act of beating or whipping
- waitpeople — Plural form of waitperson.
- wallopings — Plural form of walloping.
- xenophilia — an attraction to foreign peoples, cultures, or customs.
- zelophobia — an intense fear of jealousy or of strong emotion
- zooplastic — the transplantation of living tissue to the human body from an animal of another species.