词根词缀：keratin-

【来源及含义】Greek: containing, or derived from keratin, a highly insoluble scleroprotein that is the main constituent of horny tissues, the nails, and the organic matrix of tooth enamel; derived from Greek kera[s], kerat[os], "horn"

【同源单词】eukeratin, hyperkeratinization, keratin, keratinization, keratinize, keratinoid

词根词缀：myco-

【来源及含义】Greek: mucus; a protective secretion from the mucous membranes in the nose, throat, and lungs; a thick fluid produced by the linings of some tissues of the body and is secreted as a protective lubricant coating by cells and glands of the mucous membranes

【相关描述】Don't confuse this myco- meaning "mucus" with another myco- meaning "fungus, fungi".

【同源单词】actinomyces, actinomycetes, actinomycosis, basidiomycetous, blastomycosis, chromoblastomycosis

词根词缀：sept-, septi-, septo-

【来源及含义】Latin: a partition; a dividing wall between two spaces, tissues, or cavities; from saepire "to enclose, to hedge in", and from saepes, "fence, hedge"

【同源单词】atrioseptoplasty, atrioseptostomy, lingual septum, septal, septal defect, septarian

词根词缀：testi-, test-

【来源及含义】Latin: a witness, one who stands by; from testicle, one of the two oval male gonads supported in the scrotum by its tissues and suspended by the spermatic cord

【同源单词】Ab intestato, attest, attestable, attestant, attestation, attester