| BUTTERCUPS | • buttercups n. Plural of buttercup. • BUTTERCUP n. a crowfoot (genus Ranunculus), esp. of one of those species that have golden-yellow cup-shaped flowers. |
| PENUMBROUS | • penumbrous adj. Partially shaded. • penumbrous adj. Vague; ill-defined; unclear. • PENUMBROUS adj. relating to penumbra, partial shade. |
| PSEUDOBULB | • pseudobulb n. A storage organ in orchids, derived from the part of a stem between two leaf nodes. • PSEUDOBULB n. a swollen stem internode in some orchids. |
| PUBERULOUS | • puberulous adj. Puberulent. • PUBERULOUS adj. feebly or minutely pubescent; covered with minute down, also PUBERULENT. |
| SUBGROUPED | • subgrouped v. Simple past tense and past participle of subgroup. • SUBGROUP v. to divide into subgroups. |
| SUBOCTUPLE | • suboctuple adj. (Obsolete) Containing one part of eight; in the ratio of one to eight. • SUBOCTUPLE adj. containing one part of eight; having the ratio of one to eight. |
| SUBOPTIMUM | • suboptimum adj. Suboptimal. • suboptimum n. A point or value below an optimum. • SUBOPTIMUM n. something that is less than optimal. |
| SUBPHYLUMS | • subphylums n. Plural of subphylum. • SUBPHYLUM n. (Latin) the taxonomic division below a phylum. |
| SUBPRODUCT | • subproduct n. Byproduct. • SUBPRODUCT n. a subsidiary product. |
| SUBSPINOUS | • subspinous adj. (Anatomy) subvertebral. • subspinous adj. (Pathology) Situated beneath a spinous process, such as that of the scapula. • SUBSPINOUS adj. subvertebral. |
| SUPERCLUBS | • superclubs n. Plural of superclub. • SUPERCLUB n. a very big club. |
| SUPERJUMBO | • superjumbo n. The largest passenger airliner, the Airbus A380. • SUPERJUMBO n. a very large airliner. |
| SUPRAPUBIC | • suprapubic adj. (Anatomy) Above, or anterior to, the pubic bone. • supra-pubic adj. Alternative spelling of suprapubic. • SUPRAPUBIC adj. situated above, or anterior to, the pubic bone. |
| UPBUILDERS | • UPBUILDER n. one who upbuilds. |
| UPBURSTING | • upbursting n. A bursting upward. • UPBURST v. to burst upwards. |