| ISOENZYMES | • isoenzymes n. Plural of isoenzyme. • ISOENZYME n. one of several variants of the same enzyme occurring within a single species, also ISOZYME. |
| IZVESTIYAS | • IZVESTIYA n. (Russian) news, information, also IZVESTIA. |
| STYLOPIZES | • STYLOPIZE v. to paralyse a host, also STYLOPISE. |
| SYLLABIZES | • syllabizes v. Third-person singular simple present indicative form of syllabize. • SYLLABIZE v. to form or divide into syllables, also SYLLABISE. |
| SYLLOGIZES | • syllogizes v. Third-person singular simple present indicative form of syllogize. • SYLLOGIZE v. to reason by syllogisms, also SYLLOGISE. |
| SYMBOLIZES | • symbolizes v. Third-person singular simple present indicative form of symbolize. • SYMBOLIZE v. to be symbolic of, also SYMBOLISE. |
| SYNERGIZES | • synergizes v. Third-person singular simple present indicative form of synergize. • SYNERGIZE v. to act as a synergist, also SYNERGISE. |
| SYNOECIZES | • synoecizes v. Third-person singular simple present indicative form of synoecize. • SYNOECIZE v. to unite in one community or city-state, also SYNOECISE. |
| SYNOPSIZED | • synopsized v. Simple past tense and past participle of synopsize. • SYNOPSIZE v. to make a synopsis of, also SYNOPSISE. |
| SYNOPSIZES | • synopsizes v. Third-person singular simple present indicative form of synopsize. • SYNOPSIZE v. to make a synopsis of, also SYNOPSISE. |
| SYNTHESIZE | • synthesize v. (Transitive) To combine two or more things to produce a new product. • synthesize v. (Intransitive, of two or more things) To be combined producing a new, more complex product. • synthesize v. (Transitive, chemistry) To produce a substance by chemical synthesis. |
| SYNTONIZES | • syntonizes v. Third-person singular simple present indicative form of syntonize. • SYNTONIZE v. to adjust to agree in frequency, also SYNTONISE. |
| SYPHILIZES | • syphilizes v. Third-person singular simple present indicative form of syphilize. • SYPHILIZE v. to inoculate or infect with syphilis, also SYPHILISE. |
| SYSTEMIZED | • systemized v. Simple past tense and past participle of systemize. • SYSTEMIZE v. to reduce to a system, also SYSTEMISE. |
| SYSTEMIZER | • systemizer n. One who systemizes, or reduces to system; a systematizer. • SYSTEMIZER n. one who systemizes, also SYSTEMISER. |
| SYSTEMIZES | • systemizes v. Third-person singular simple present indicative form of systemize. • SYSTEMIZE v. to reduce to a system, also SYSTEMISE. |
| ZINCOLYSES | • ZINCOLYSIS n. (obsolete) electrolysis. |
| ZIZYPHUSES | • ZIZYPHUS n. (Latin) a shrub or tree of the buckthorn family, aka the jujube tree. |
| ZYGOSITIES | • zygosities n. Plural of zygosity. • ZYGOSITY n. the makeup of a zygote. |