Radio-flagellata (n.)
definition: A group of Protozoa having both flagella and pseudopodia.

Radio-flagellata is a 16 letter word that begins with an R and ends in an A

Representatively (ad)
definition: In a representative manner; vicariously.

Representatively is a 16 letter word that begins with an R and ends in a Y

Residentiaryship (n.)
definition: The office or condition of a residentiary.

Residentiaryship is a 16 letter word that begins with an R and ends in a P

Retrovaccination (n.)
definition: The inoculation of a cow with human vaccine virus.

Retrovaccination is a 16 letter word that begins with an R and ends in an N

Right-handedness (n.)
definition: The state or quality of being right-handed; hence
Skill; dexterity.
Right-handedness is a 16 letter word that begins with an R and ends in an S

Robin Goodfellow
definition: A celebrated fairy; Puck. See Puck.

Robin Goodfellow is a 16 letter word that begins with an R and ends in a W

Round-shouldered (a.)
definition: Having the shoulders stooping or projecting; round-backed.

Round-shouldered is a 16 letter word that begins with an R and ends in a D

Ruhmkorff's coil
definition: See Induction coil
Under Induction.
Ruhmkorff's coil is a 16 letter word that begins with an R and ends in an L

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